Eduard Hryha

Docent at Department of Materials and Manufacturing Technology, Surface and Microstructure Engineering

Main focus of the research:- Powder metallurgy – powder manufacturing and properties, compaction, tailoring of sintering process in case of high-performance alloyed PM steels, sintering atmospheres, synthesis, etc.- Surface analysis using advanced surface-sensitive techniques – characterization of surface composition and solid-gas interaction on the nano-level using surface-sensitive techniques as XPS (X-ray photoelectron spectroscopy) and Auger spectroscopy- Thermal analysis – TG/DTA/DSC/DIL in inert and reducing (e.g. hydrogen) atmospheres- Thermodynamic and kinetic simulation (ThermoCalc, JMatPro, HSC Chemistry, DICTRA)

Source: chalmers.se

Projects

2013–2014

Realisation of Soft Magnetic Composites for Expanded Use in Future Inductor Applications

Eduard Hryha Department of Materials and Manufacturing Technology, Surface and Microstructure Engineering
VINNOVA

2016–2020

Nanotechnology Enhanced Sintered Steel Processing

Lars Nyborg Department of Materials and Manufacturing Technology
Johan Liu Department of Microtechnology and Nanoscience
Eduard Hryha Department of Materials and Manufacturing Technology, Surface and Microstructure Engineering
Swedish Foundation for Strategic Research (SSF)

2013–2016

Novel sintering strategy for the competitive manufacturing of the high-performance PM components

Lars Nyborg Department of Materials and Manufacturing Technology
Seshendra Karamchedu Department of Materials and Manufacturing Technology, Surface and Microstructure Engineering
Eduard Hryha Department of Materials and Manufacturing Technology, Surface and Microstructure Engineering
Maheswaran Vattur Sundaram Department of Materials and Manufacturing Technology, Surface and Microstructure Engineering
VINNOVA

2014–2016

Strategic Research Area No.1 Modelling - Phase II

Lars Nyborg Department of Materials and Manufacturing Technology
Fang Liu Department of Applied Physics, Materials Microstructure
Eduard Hryha Department of Materials and Manufacturing Technology, Surface and Microstructure Engineering
Martin Fagerström Department of Applied Mechanics, Material and Computational Mechanics
VINNOVA

2012–2013

Sintered parts with high static loading capacity - effect of tempering on deformation stability in use

Lars Nyborg Department of Materials and Manufacturing Technology
Maheswaran Vattur Sundaram Department of Materials and Manufacturing Technology, Surface and Microstructure Engineering
Kumar Babu Surreddi Department of Materials and Manufacturing Technology, Surface and Microstructure Engineering
Eduard Hryha Department of Materials and Manufacturing Technology, Surface and Microstructure Engineering
VINNOVA

2014–2017

Innovative powder based manufacturing of gear wheels with high performance (HIPGEAR)

Lars Nyborg Department of Materials and Manufacturing Technology
Eduard Hryha Department of Materials and Manufacturing Technology, Surface and Microstructure Engineering
Maheswaran Vattur Sundaram Department of Materials and Manufacturing Technology, Surface and Microstructure Engineering
VINNOVA

There might be more projects where Eduard Hryha participates, but you have to be logged in as a Chalmers employee to see them.

Publications

2017

Optimizing the synthesis of ultrafine tungsten carbide powders by effective combinations of carbon sources and atmospheres

R. Oro, Eduard Hryha, R. Gilardi et al
International journal of refractory metals & hard materials. Vol. 63, p. 9-16
Scientific journal article - peer reviewed
2016

Reactivity of carbon based materials for powder metallurgy parts and hard metal powders manufacturing

Raffaele Gilardi, Luigi Alzati, Raquel Oro et al
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy. Vol. 63 (7), p. 548-554
Scientific journal article - peer reviewed
2016

The Study of Local Effect of Manganese on Microstructure Development of Admixed Fe-Mn-C Sintered Steels

R. Bidulsky, Eduard Hryha, J. Bidulska et al
High Temperature Materials and Processes. Vol. 35 (9), p. 865-870
Scientific journal article - peer reviewed
2016

Copper Bronze Powder Surface Studied by XPS and HR SEM

Ruslan Shvab, Eduard Hryha, Abdul Malik Tahir et al
Powder Metallurgy Progress. Vol. 16 (1), p. 40–47
Scientific journal article - peer reviewed
2016

Characterization Of The Virgin And Re-cycled Nickel Alloy HX Powder Used For Selective Laser Melting

Ruslan Shvab, Alexander Leicht, Eduard Hryha et al
Proceedings of Wolrd PM2016 - AM - Powder Recycling and Aging
Conference paper - peer reviewed
2016

Surface Characterization Of 60Cu-40Sn Bronze Powder

Ruslan Shvab, Eduard Hryha, Abdul Malik Tahir et al
Proceedings of Wolrd PM2016 - Powder Characterization l
Conference paper - peer reviewed
2016

Influence Of Cr Alloying Content On The Surface Oxide Composition In Case Of Water-atomized Steel Powder

Ruslan Shvab, Eduard Hryha, Dimitris Chasoglou et al
Proceedings of Wolrd PM2016 - Powder Characterization l
Conference paper - peer reviewed
2016

Characterisation of EBM-Built Shelled Samples of Ti6Al4V Compacted by HIP

Karin Frisk, Lars-Erik Rännar, Andrey Koptyug et al
Proceedings of Wolrd PM2016 - AM - Powder Bed Based Technologies
Conference paper - peer reviewed
2016

As-HIP Microstructure Of EBM Fabricated Shell Components

Alexander Leicht, Maheswaran Vattur Sundaram, Yiming Yao et al
Proceedings of Wolrd PM2016 - AM - Properties of Lightweight Materials ll
Conference paper - peer reviewed
2016

Reaching Full Density of 100Cr6 PM Steel by Capsule Free Hot Isostatic Pressing of High-Velocity Compacted Material

Hans Magnusson, Karin Frisk, Maheswaran Vattur Sundaram et al
Proceedings of Wolrd PM2016 - HIP - Production
Conference paper - peer reviewed
2016

Vacuum Sintering Studies On Chromium Alloyed PM Steels

Maheswaran Vattur Sundaram, Seshendra Karamchedu, Clément Gouhier et al
Proceedings of Wolrd PM2016 - Steel Sintering
Conference paper - peer reviewed
2016

Electron Beam Melting Manufacturing Technology for Individually Manufactured Jaw Prosthesis: A Case Report

Felicia Suska, Göran Kjeller, Peter Tarnow et al
Journal of Oral and Maxillofacial Surgery. Vol. 74 (8), p. 1706.e1-1706.e16
Scientific journal article - peer reviewed
2016

An XPS investigation on the thermal stability of the insulating surface layer of soft magnetic composite powder

Christos Oikonomou, Eduard Hryha, Lars Nyborg et al
Surface and Interface Analysis. Vol. 48 (7), p. 445-450
Scientific journal article - peer reviewed
2016

Surface chemical state of Ti powders and its alloys: Effect of storage conditions and alloy composition

Eduard Hryha, Ruslan Shvab, Martin Bram et al
Applied Surface Science
Scientific journal article - peer reviewed
2015

Preparation of AlCoCrFeNiTi0.5 high entropy alloy by SPS from mechanically alloyed powders

I. Moravcik, J. Cizek, Eduard Hryha et al
Proceedings Euro PM 2015: International Power Metallurgy Congress and Exhibition
Conference paper - peer reviewed
2015

The Role of Carbon Source in the Production of Ultrafine and Nanocrystalline WC-6Co Cemented Carbides

Raffaele Gilardi, Luigi Alzati, Raquel Oro et al
roceedings EURO PM2015 Congress & Exhibition, 4-7 October 2015, Reims, France, p. 1-6
Conference paper - peer reviewed
2015

Vacuum Levels Influence on the Properties of Various High Temperature Brazing Alloys

Owe Mårs, Eduard Hryha,
Proceedings of the International Brazing & Soldering Conference (IBSC)
Conference paper - peer reviewed
2015

Interparticle Neck Connections in Innovative Insulated Iron Powder Compounds

Robert Bidulsky, Jana Bidulska, Raquel de Oro Calderon et al
Acta Physica Polonica. A. Vol. 128 (4), p. 647-650
Scientific journal article - peer reviewed
2015

"Internal Gettering” – Metallothermic Reduction Processes In The Early Stage Of Sintering

Christian Gierl-Mayer, Herbert Danninger, Raquel de Oro Calderon et al
International journal of powder metallurgy. Vol. 51 (3), p. 47-53
Scientific journal article - peer reviewed
2015

Thermodynamic And Kinetic Aspects Of Oxide Transformation During Sintering Of Cr-Prealloyed Pm Steels

Eduard Hryha, Lars Nyborg,
International journal of powder metallurgy. Vol. 51 (3), p. 35-46
Scientific journal article - peer reviewed
2015

Dissolution of carbon in Cr-prealloyed PM steels: effect of carbon source

Eduard Hryha, Lars Nyborg, Luigi Alzati et al
Powder Metallurgy. Vol. 58 (1), p. 7-11
Scientific journal article - peer reviewed
2015

Lean Atmospheres for Sintering of Chromium Alloyed Powder Metallurgy Steels

Seshendra Karamchedu, Eduard Hryha, Lars Nyborg et al
Journal of The American Ceramic Society. Vol. 98 (11), p. 3588-3595
Scientific journal article - peer reviewed
2015

Effect of active components of sintering atmosphere on reduction/oxidation processes during sintering of Cr-alloyed PM steels

Eduard Hryha, Seshendra Karamchedu, Dmitri Riabov et al
Journal of The American Ceramic Society. Vol. 98 (11), p. 3561-3568
Scientific journal article - peer reviewed
2015

Changes in the surface chemistry of chromium-alloyed powder metallurgical steel during delubrication and their impact on sintering

Seshendra Karamchedu, Eduard Hryha, Lars Nyborg et al
Journal of Materials Processing Technology. Vol. 223, p. 171-185
Scientific journal article - peer reviewed
2015

Influence of the PM-Processing Route and Nitrogen Content on the Properties of Ni-Free Austenitic Stainless Steel

K. Lefor, M. Walter, A. Weddeling et al
Metallurgical and Materials Transactions. A. Vol. 46 (3), p. 1154-1167
Scientific journal article - peer reviewed
2015

Nitrogen uptake of nickel free austenitic stainless steel powder during heat treatment-an XPS study

Anna Weddeling, K. Lefor, Eduard Hryha et al
Surface and Interface Analysis. Vol. 47 (3), p. 413-422
Scientific journal article - peer reviewed
2014

Optimization of Carbothermal Reactions for Producing Nanostructured Tungsten Carbide Powders

Raquel de Oro Calderon, Eduard Hryha, Raffaele Gilardi et al
Proceedings EURO PM2014 Congress & Exhibition, 21-24 September 2014, Salzburg, Austria
Conference paper - peer reviewed
2014

The Role of Carbon Source in the Production of WC Powders

Raffaele Gilardi, Luigi Alzati, Raquel de Oro Calderon et al
9th International Conference on Tungsten, Refractory and Hardmaterials; Orlando; United States; 18 May 2014 through 22 May 2014. Vol. 1 Powder Production, p. 37-44
Conference paper - peer reviewed
2014

Effective Synthesis of Nanocrystalline Tungsten Carbide Powders by Mechanical and Thermal Activation of Precursors

Raquel de Oro Calderon, Eduard Hryha, Lars Nyborg et al
9th International Conference on Tungsten, Refractory and Hardmaterials; Orlando; United States; 18 May 2014 through 22 May 2014. Vol. 1 Powder Production, p. 12-23
Conference paper - peer reviewed
2014

Optimizing the Synthesis of Nanostructured Tungsten Carbide Powders by Effective Combination of Carbon Sources and Atmospheres

Raquel de Oro Calderon, Eduard Hryha, Raffaele Gilardi et al
9th International Conference on Tungsten, Refractory and Hardmaterials; Orlando; United States; 18 May 2014 through 22 May 2014. Vol. 1 Powder Production, p. 1-11
Conference paper - peer reviewed
2014

Effect of heat treatment in air on surface composition of iron-phosphate based soft magnetic composite components

Christos Oikonomou, Raquel de Oro Calderon, Eduard Hryha et al
Materials Science & Engineering: B. Solid-state Materials for Advanced Technology. Vol. 189, p. 90-99
Scientific journal article - peer reviewed
2014

Carbon control in PM Sintering

Eduard Hryha, Gerd Waning, Lars Nyborg et al
Heat Processing. Vol. 12 (1), p. 33-39
Journal article - popular science
2014

Microstructure of High Cr-Alloyed Sintered Steel – Prediction and Analysis

Ruslan Shvab, Eduard Hryha, Petro Shykula et al
Materials Science Forum. Vol. 782, p. 473-479
Scientific journal article - peer reviewed
2014

Development of methodology for surface characterization of vanadium containing slag

Eduard Hryha, Elin Rutqvist, Johan Björkvall et al
Surface and Interface Analysis. Vol. 46 (10-11), p. 984-988
Scientific journal article - peer reviewed
2014

Influence of the Steel Powder Type and Processing Parameters on the Debinding of PM Compacts with Gelatin Binder

Eduard Hryha, Henrik Borgström, Karin Sterky et al
Journal of thermal analysis and calorimetry. Vol. 118 (2), p. 695-704
Scientific journal article - peer reviewed
2014

Thermogravimetry Study of the Effectiveness of Different Reducing Agents during Sintering of Cr-prealloyed PM Steels

Eduard Hryha, Lars Nyborg,
Journal of Thermal Analysis and Calorimetry. Vol. 118 (2), p. 825-834
Scientific journal article - peer reviewed
2014

Surface Oxides on Gas and Water Atomized Steel Powders

Lars Nyborg, Eduard Hryha,
Advances in Powder Metallurgy & Particulate Materials-2014. Vol. 2, p. 2153-2161
Conference paper - peer reviewed
2014

EFFICIENCY OF DIFFERENT CARBON SOURCES DURING SINTERING OF CR-PREALLOYED PM STEELS: GRAPHENE, GRAPHITE OR CARBON BLACK?

Eduard Hryha, Lars Nyborg, Sigurd Berg et al
Advances in Powder Metallurgy & Particulate Materials-2014. Vol. 5, p. 16-28
Conference paper - peer reviewed
2014

“INTERNAL GETTERING” – METALLOTHERMIC REDUCTION PROCESSES IN THE EARLY STAGE OF SINTERING

Christian Gierl-Mayer, Herbert Danninger, Raquel de Oro Calderon et al
Advances in Powder Metallurgy & Particulate Materials-2014. Vol. 5, p. 74-85
Conference paper - peer reviewed
2014

THERMODYNAMIC AND KINETIC ASPECTS OF OXIDE TRANSFORMATION DURING SINTERING OF CR-PREALLOYED PM STEELS

Eduard Hryha, Lars Nyborg,
Advances in Powder Metallurgy & Particulate Materials-2014. Vol. 5, p. 108-122
Conference paper - peer reviewed
2014

Efficient Sintering of Cr-Prealloyed Powders by Careful Adjustment of Process Parameters

Dimitris Chasoglou, Eduard Hryha, Ola Bergman et al
Advances in Powder Metallurgy & Particulate Materials-2014. Vol. 5, p. 142-153
Conference paper - peer reviewed
2014

EFFICIENCY AND TEMPERATURE RANGES OF ACTIVITY OF DIFFERENT REDUCING AGENTS DURING SINTERING OF CR-PREALLOYED PM STEELS

Eduard Hryha, Lars Nyborg,
Advances in Powder Metallurgy & Particulate Materials-2014. Vol. 5, p. 163-177
Conference paper - peer reviewed
2014

Surface Oxide Transformation during HIP of Austenitic Fe-19Mn-18Cr-C-N PM steel

Eduard Hryha, Anna Weddeling, Maximilian Walter et al
Proceedings of 11-th International Conference on Hot Isostatic Pressing, 9-13 June 2014, Stockholm, Sweden (1), p. 180-193
Conference paper - peer reviewed
2014

Effectiveness of reducing agents during sintering of Cr-prealloyed PM steels

Eduard Hryha, Lars Nyborg,
Powder Metallurgy. Vol. 57 (4), p. 245-250
Scientific journal article - peer reviewed
2014

XPS Analysis of Oxide Transformation During Sintering of Chromium Alloyed PM Steels

Maheswaran Vattur Sundaram, Eduard Hryha, Lars Nyborg et al
Powder Metallurgy Progress. Vol. 14 (2), p. 85-92
Scientific journal article - peer reviewed
2014

Investigation of Low Temperature Creep Behaviour of PM Steels

Maheswaran Vattur Sundaram, Henrik Karlsson, Kumar Babu Surreddi et al
Powder Metallurgy Progress. Vol. 14 (2), p. 67-72
Scientific journal article - peer reviewed
2014

Prediction, Formation and Analysis of Microstructure of High Chromium-Alloyed PM Stainless Steel Sintered in Different Atmospheres

Ruslan Shvab, Eduard Hryha, Petro Shykula et al
Powder Metallurgy Progress. Vol. 14 (2), p. 99-107
Scientific journal article - peer reviewed
2014

Effect of processing conditions on microstructural features in Mn-Si sintered steels

Raquel de Oro Calderon, Eduard Hryha, M. Campos et al
Materials Characterization. Vol. 95, p. 105-117
Scientific journal article - peer reviewed
2014

Microstructure Development in Powder Metallurgy Steels: Effect of Alloying Elements and Process Variables

Eduard Hryha, Lars Nyborg,
Materials Science Forum. Vol. 782, p. 467-472
Scientific journal article - peer reviewed
2014

Oxide Transformation in Cr-Mn-Prealloyed Sintered Steels: Thermodynamic and Kinetic Aspects

Eduard Hryha, Lars Nyborg,
Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science. Vol. 45A (4), p. 1736-1747
Scientific journal article - peer reviewed
2014

Evaluation of the thickness and roughness of homogeneous surface layers on spherical and irregular powder particles

Christos Oikonomou, Dimitrios Nikas, Eduard Hryha et al
Surface and Interface Analysis. Vol. 46 (10-11), p. 1028-1032
Scientific journal article - peer reviewed
2013

Surface Analysis of Water Atomised High Chromium Alloyed Steel Powder by X-ray Photoelectron Spectroscopy

Ruslan Shvab, Eduard Hryha, Eva Dudrova et al
Powder Metallurgy Progress. Vol. 13 (2), p. 57-62
Scientific journal article - peer reviewed
2013

PM parts sintered state improvement achieved by carbon source selection

L. Alzati, R. Gilardi, Eduard Hryha et al
2013 International Conference on Powder Metallurgy and Particulate Materials, PowderMet 2013, p. 516-524
Conference paper - peer reviewed
2013

Kohlenstoffreggelung beim Sintern

Eduard Hryha, Lars Nyborg, Gerd Waning et al
gaswärme international . Vol. 5, p. 59-66
Journal article - popular science
2013

Characteristics of Surface Oxides: Similarities and Differences between Gas and Water Atomized Steel Powders

Lars Nyborg, Eduard Hryha,
Proceedings EURO PM2013 Congress & Exhibition, 15-18 September 2013, Gothenburg, Sweden (2), p. 199-204
Conference paper - peer reviewed
2013

Effect of reducing agents on the sintering of chromium alloyed PM steels

Dimitris Chasoglou, Eduard Hryha,
Proceedings EURO PM2013 Congress & Exhibition, 15-18 September 2013, Gothenburg, Sweden. Vol. 2, p. 297-302
Conference paper - peer reviewed
2013

Optimisation of sintering atmospheres for controlled sintering of PM steels

Dimitris Chasoglou, Eduard Hryha,
Proceedings EURO PM2013 Congress & Exhibition, 15-18 September 2013, Gothenburg, Sweden. Vol. 2, p. 339-346
Conference paper - peer reviewed
2013

Dissolution of Carbon in Cr-Prealloyed PM Steels: Effect of Carbon Source

Eduard Hryha, Lars Nyborg, Luigi Alzati et al
Proceedings EURO PM2013 Congress & Exhibition, 15-18 September 2013, Gothenburg, Sweden. Vol. 2, p. 303-310
Conference paper - peer reviewed
2013

Effectiveness of Different Reducing Agents during Sintering of Cr-Prealloyed PM Steels

Eduard Hryha, Lars Nyborg,
Proceedings EURO PM2013 Congress & Exhibition, 15-18 September 2013, Gothenburg, Sweden. Vol. 2, p. 333-338
Conference paper - peer reviewed
2013

X-ray Photoelectron Spectroscopy Surface Analysis of High Chromium Alloyed Steel Powder

Ruslan Shvab, Eduard Hryha, Eva Dudrova et al
Proc. Of 18-th International Seminar SEMDOK, Terchoca, Slovakia, 30 January-1 February 2013, p. 66-69
Conference paper - non peer reviewed
2013

Surface Oxides on Gas and Water Atomized Steel Powders

Lars Nyborg, Eduard Hryha,
Proc. of the 2012 Powder Metallurgy World Congress & Exhibition, Yokohama, Japan, p. 15C-T1-8
Conference paper - peer reviewed
2013

Effect of Processing Parameters on Oxide Transformation in Cr-Mn-Prealloyed Sintered Steels

Eduard Hryha, Lars Nyborg,
Proc. of the 2012 Powder Metallurgy World Congress & Exhibition, Yokohama, Japan, p. 16A-T9-12
Conference paper - peer reviewed
2013

Effect of Carbon Source on Oxide Reduction in Cr-Prealloyed PM Steels

Eduard Hryha, Lars Nyborg, Luigi Alzati et al
Proc. of the 2012 Powder Metallurgy World Congress & Exhibition, p. 16A-T9-11
Conference paper - peer reviewed
2013

Effect of Powder Properties on the Compressibility of Water-Atomized Iron and Low-Alloyed Steel Grades

Christos Oikonomou, Eduard Hryha, Lars Nyborg et al
Euro PM2013 Proceedings. Vol. 2, p. 205-212
Conference paper - peer reviewed
2013

Synthesis of Nanostructured Tungsten Carbide Powders from Mechanically Activated Mixes of Tungsten Oxide with Different Carbon Sources

Raquel de Oro Calderon, Eduard Hryha, Raffaele Gilardi et al
International Powder Metallurgy Congress and Exhibition, Euro PM 2013; Gothenburg; Sweden; 15 September 2013 through 18 September 2013. Vol. 1, p. 89-94
Conference paper - peer reviewed
2013

Parameters Controlling the Oxide Reduction during Sintering of Chromium Prealloyed Steel

Monika Hrubovcakova, Eva Dudrova, Eduard Hryha et al
Advances in Materials Science and Engineering
Scientific journal article - peer reviewed
2013

Surface phenomena during the early stages of sintering in steels modified with Fe–Mn–Si–C master alloys

Raquel de Oro Calderon, Monica Campos Gomez, Eduard Hryha et al
Materials Characterization. Vol. 86, p. 80-91
Scientific journal article - peer reviewed
2013

Lean atmospheres for sintering chromium alloyed PM steels

Seshendra Karamchedu, Eduard Hryha, Sigurd Berg et al
Proceedings of Euro PM2013. Vol. 2, p. 353-358
Conference paper - peer reviewed
2013

Influence of delubrication process on the properties of sintered PM components

Seshendra Karamchedu, Eduard Hryha, Lars Nyborg et al
Proceedings of Euro PM2013. Vol. 2, p. 163-168
Conference paper - peer reviewed
2013

Low Temperature Creep Behavior of PM Components Under Static Load Conditions

Kumar Babu Surreddi, Maheswaran Vattur Sundaram, Eduard Hryha et al
Proceedings of Euro PM2013. Vol. 3, p. 349-354
Conference paper - peer reviewed
2013

Carbon control in PM sintering: industrial applications and experience

Eduard Hryha, Lars Nyborg, A. Malas et al
Powder Metallurgy. Vol. 56 (1), p. 5-10
Scientific journal article - peer reviewed
2013

Characterization of surface oxides on water-atomized steel powder by XPS/AES depth profiling and nano-scale lateral surface analysis

Dimitris Chasoglou, Eduard Hryha, Mats Norell et al
Applied Surface Science. Vol. 268, p. 496-506
Scientific journal article - peer reviewed
2013

Effect of process parameters on surface oxides on chromium-alloyed steel powder during sintering

Dimitris Chasoglou, Eduard Hryha, Lars Nyborg et al
Materials Chemistry and Physics. Vol. 138 (1), p. 405-415
Scientific journal article - peer reviewed
2012

Processing Conditions And Reduction Of Oxides During Sintering Of Chromium Pre-Alloyed Steel

Monica Hrubcakova, Eva Dudrova, Eduard Hryha et al
Powder Metallurgy Progress. Vol. 12 (3), p. 144-158
Scientific journal article - peer reviewed
2012

Control of delubrication process for PM components based on prealloyed steel powders

Eduard Hryha, Seshendra Karamchedu, Lars Nyborg et al
Proceedings of the 2012 Powder Metallurgy World Congress & Exhibition, Powder Metallurgy Association and Japan Society of Powder and Powder Metallurgy,2013
Conference paper - peer reviewed
2012

Surface Chemical Analysis of Soft Magnetic Composite Podwers

Christos Oikonomou, Eduard Hryha, Lars Nyborg et al
Materials for Tomorrow 2012
Conference poster
2012

Effect of Delubrication Process Parameters on Surface Characteristics of Cr- alloyed PM steels

Seshendra Karamchedu, Eduard Hryha, Lars Nyborg et al
Materials for Tomorrow 2012
Conference poster
2012

Parameters Controlling the Reduction of Oxides During Sintering of Cr-prealloyed Steel

Eva Dudrova, Monika Hrubovčáková, Eduard Hryha et al
Proceedings EURO PM2012 Congress & Exhibition, 16-19 September 2012, Basel, Switzerland. Vol. 1, p. 299-304
Conference paper - peer reviewed
2012

Influence of Nitrogen Atmosphere on Reduction Mechanisms of a High Strength Austenitic Steel

Anna Weddeling, Huth Stephan, Eduard Hryha et al
Proceedings EURO PM2012 Congress & Exhibition, 16-19 September 2012, Basel, Switzerland. Vol. 1, p. 375-380
Conference paper - peer reviewed
2012

Carbon Control in PM Sintering: Industrial Applications and Experience so Far

Eduard Hryha, Lars Nyborg, Akin Malas et al
Proc. of EURO PM2012 Congress & Exhibition, 16-19 September 2012, Basel, Switzerland. Vol. 1, p. 265-270
Conference paper - peer reviewed
2012

Process Control System for Delubrication of PM Steels

Eduard Hryha, Lars Nyborg,
Acta Metallurgica Slovaca. Vol. 18 (2-3), p. 60-68
Scientific journal article - peer reviewed
2012

Characterization of the surface of Fe–19Mn–18Cr–C–N during heat treatment in a high vacuum — An XPS study

Kathrin Zumsande, Anna Weddeling, Eduard Hryha et al
Materials Characterization. Vol. 71, p. 66-76
Scientific journal article - peer reviewed
2012

Stoichiometric Vanadium Oxides Studied by XPS

Eduard Hryha, Elin Rutqvist, Lars Nyborg et al
Surface and Interface analysis. Vol. 44 (8), p. 1022-1025
Scientific journal article - peer reviewed
2012

Development of methodology for surface analysis of soft magnetic composite powders

Christos Oikonomou, Eduard Hryha, Lars Nyborg et al
SURFACE and INTERFACE ANALYSIS. Vol. 44 (8), p. 1166-1170
Scientific journal article - peer reviewed
2012

On-line Control of Processing Atmospheres for Proper Sintering of Oxidation-Sensitive PM Steels

Eduard Hryha, Eva Dudrova, Lars Nyborg et al
Journal of Materials Processing Technology. Vol. 212 (4), p. 977-987
Scientific journal article - peer reviewed
2012

Prediction of mechanical properties of Fe–Cr–Mo sintered steel in relationship with microstructure

Lucia Ciripova, Eduard Hryha, Eva Dudrova et al
Materials and Design. Vol. 35 (1), p. 619-625
Scientific journal article - peer reviewed
2011

Improvement of Mechanical Properties of Fe-Cr-Mo-[Cu-Ni]-C Sintered Sintered Steels by Sinter Hardening

E. Dudrova, MA Grande, M. Rosso et al
Materials Science Forum. Vol. 672, p. 31-38
Scientific journal article - peer reviewed
2011

CHANGES IN OXIDE CHEMISTRY DURING CONSOLIDATION OF Cr/Mn WATER ATOMIZED STEEL POWDER

Eduard Hryha, Lars Nyborg,
Powder Metallurgy Progress. Vol. 11 (1-2), p. 42-50
Scientific journal article - peer reviewed
2011

INFLUENCE OF PROCESS PARAMETERS ON DELUBRICATION OF PM STEELS

Seshendra Karamchedu, Eduard Hryha, Lars Nyborg et al
Powder Metallurgy Progress . Vol. 11 (1-2), p. 90-96
Scientific journal article - peer reviewed
2011

Fractographic Investigation of Chromium-alloyed PM Steels Sintered in Atmospheres with Varying Hydrogen Content

Dimitris Chasoglou, Eduard Hryha, Lars Nyborg et al
Powder Metallurgy Progress. Vol. 11 (1-2), p. 32-41
Scientific journal article - peer reviewed
2011

Characterization of High-Mn-Cr Austenitic Steel Powder Fe-19Mn-18Cr-C-N

Anna Weddeling, Kathrin Zumsande, Eduard Hryha et al
Proc. of EURO PM2011 Congress & Exhibition, 9-12 October 2011, Barcelona, Spain. Vol. 2, p. 15-20
Conference paper - peer reviewed
2011

Surface Analysis at Different Sintering Stages of Steel Compacts with Mn and Si

Raquel Oro, Monica Campos, Eduard Hryha et al
Proc. of EURO PM2011 Congress & Exhibition, 9-12 October 2011, Barcelona, Spain. Vol. 1, p. 113-117
Conference paper - peer reviewed
2011

Oxide Transformation during Sintering of Cr and Mn Prealloyed Water Atomized Steel Powder

Eduard Hryha, Lars Nyborg,
Proc. of EURO PM2011 Congress & Exhibition, 9-12 October 2011, Barcelona, Spain. Vol. 1, p. 95-100
Conference paper - peer reviewed
2011

Delubrication of PM Components Based on Cr-Prealloyed Steel Powder – Chances and Risks

Eduard Hryha, Seshendra Karamchedu, Lars Nyborg et al
Proc. of EURO PM2011 Congress & Exhibition, 9-12 October 2011, Barcelona, Spain. Vol. 3, p. 105-110
Conference paper - peer reviewed
2011

Effect of Atmosphere Composition on the Surface Interactions during Sintering of Chromium-alloyed PM Steels

Dimitris Chasoglou, Eduard Hryha, Lars Nyborg et al
Proceedings of EURO PM 2011 International Powder Metallurgy Congress & Exhibition, 9th-12th October 2011, Barcelona. Vol. 3, p. 111-117
Conference paper - peer reviewed
2011

The Sintering Behaviour of Fe-Mn-C Powder System, Correlation between Thermodynamics and Sintering Process, Manganese Distribution and Microstructure Composition, Effect of Alloying Mode

Eduard Hryha, Eva Dudrova,
Application of Thermodynamics to Biological and Materials Science, Book edited by: Mizutani Tadashi, p. 573-602
Chapter in monograph, book
2010

MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Fe-Cr-Mo-[Cu-Ni]-C SINTERED STEELS

E. Dudrova, M Actis Grande, M Rosso et al
Acta Metallurgica Slovaca - Conference. Vol. 1, p. 580-585
Scientific journal article - peer reviewed
2010

The Effect of Manganese on Microstructure Development and Diffusion Characteristics in Admixed Fe-Mn-C Sintered Steels

Robert Bidulsky, M Actis Grande, Eduard Hryha et al
World Powder Metallurgy Congress and Exhibition, World PM 2010; Florence; Italy; 10 October 2010 through 14 October 2010. Vol. 3, p. 113-120
Conference paper - peer reviewed
2010

Improvement of Strength Properties of Fe-Cr-Mo-[Cu-Ni]-C Sintered Steels by Sinter-Hardening

E Dudrova, M Actis Grande, M Rosso et al
World Powder Metallurgy Congress and Exhibition, World PM 2010; Florence; Italy; 10 October 2010 through 14 October 2010. Vol. 3, p. 79-86
Conference paper - peer reviewed
2010

Sintered Steels Prealloyed with Manganese – Chances and Risks

H. Danninger, M Jaliliziyaeian, C Gierl et al
World Powder Metallurgy Congress and Exhibition, World PM 2010; Florence; Italy; 10 October 2010 through 14 October 2010. Vol. 3, p. 3-10
Conference paper - peer reviewed
2010

Oxide Transformation During Sintering Of Prealloyed Water Atomized Steel Powder

Eduard Hryha, Lars Nyborg,
World Powder Metallurgy Congress and Exhibition, World PM 2010; Florence; Italy; 10 October 2010 through 14 October 2010. Vol. 2, p. 268-275
Conference paper - peer reviewed
2010

Surface Analysis of Prealloyed Steel Powders: Qualitative and Quantitative Aspects

Eduard Hryha, Lars Nyborg, C Gierl et al
World Powder Metallurgy Congress and Exhibition, World PM 2010; Florence; Italy; 10 October 2010 through 14 October 2010. Vol. 1, p. 25-32
Conference paper - peer reviewed
2010

Sintered Steels Alloyed with Manganese: Effect of Alloying Mode

Eduard Hryha, Lars Nyborg, Eva Dudrova et al
World Powder Metallurgy Congress and Exhibition, World PM 2010; Florence; Italy; 10 October 2010 through 14 October 2010. Vol. 3, p. 87-94
Conference paper - peer reviewed
2010

Critical Aspects of Alloying of Sintered Steels with Manganese

Eduard Hryha, E. Dudrova, Lars Nyborg et al
Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science. Vol. 41A (11), p. 2880-2897
Scientific journal article - peer reviewed
2010

Surface Interactions during Sintering of Chromium-alloyed PM Steels in Different Atmospheres

Dimitris Chasoglou, Eduard Hryha, Lars Nyborg et al
World Powder Metallurgy Congress and Exhibition, World PM 2010; Florence; Italy; 10 October 2010 through 14 October 2010. Vol. 2, p. 3-12
Conference paper - peer reviewed
2010

Oxide Distribution in Prealloyed Water Atomized Steel Powder

Dimitris Chasoglou, Eduard Hryha, Lars Nyborg et al
World Powder Metallurgy Congress and Exhibition, World PM 2010; Florence; Italy; 10 October 2010 through 14 October 2010. Vol. 1, p. 61-69
Conference paper - peer reviewed
2010

Effect of Sintering Atmosphere on the Transformation of Surface Oxides during the Sintering of Chromium Alloyed Steel

Dimitris Chasoglou, Eduard Hryha, Lars Nyborg et al
Powder Metallurgy Progress. Vol. 9(2009) (3), p. 141-155
Scientific journal article - peer reviewed
2010

Surface composition of the steel powders pre-alloyed with manganese

Eduard Hryha, C Gierl, Lars Nyborg et al
Applied Surface Science. Vol. 256 (12), p. 3946-3961
Scientific journal article - peer reviewed
2009

Powder Properties, Compacting and Sintering

Eduard Hryha, Robert Bidulsky, Robert Dzunda et al
Powder Metallurgy - Laboratory Work Tutorial, EPMA/IMR SAS, Kosice, Slovakia, June 2009, p. 9-22
Chapter in monograph, book
2009

Evaluation of Surface Characteristics of Prealloyed Cr-Mo-steel Powder

Dimitris Chasoglou, Eduard Hryha, Lars Nyborg et al
Proceedings of XXV Panhellenic Conference on Solid State Physics & Materials Science, p. 267-268
Conference paper - peer reviewed
2009

Methodology for Evaluating the Oxide Distribution in Water Atomized Steel Powder

Dimitris Chasoglou, Eduard Hryha, Lars Nyborg et al
Proceedings of EURO PM 2009 International Powder Metallurgy Congress & Exhibition. Vol. 2, p. 181-186
Conference paper - peer reviewed
2009

An application of universal hardness test to metal powder

Eduard Hryha, Pavel Zubko, Eva Dudrova et al
Journal of Materials Processing Technology. Vol. 209 (5), p. 2377–2385
Scientific journal article - peer reviewed
2009

Surface Analysis of Prealloyed with Manganese Steel Powder

Eduard Hryha, Lars Nyborg, Sven Bengtsson et al
Proceedings of Euro PM2009 Conference&Exhibition. Vol. 2, p. 169-174
Conference paper - peer reviewed
2009

Microstructure Development during Sintering of Manganese Alloyed PM Steels

Eduard Hryha, Lars Nyborg, E Dudrova et al
Proceedings Of Euro PM2009 Congress&Exhibition. Vol. 1, p. 17-22
Conference paper - peer reviewed
2008

BRITTLENESS OF STRUCTURAL PM STEELS ADMIXED WITH MANGANESE STUDIED BY ADVANCED ELECTRON MICROSCOPY AND SPECTROSCOPY

Eduard Hryha, Lars Nyborg, E Dudrova et al
Powder Metallurgy Progress. Vol. 8 (2), p. 109-114
Scientific journal article - peer reviewed
2008

Modelling of Sintering Atmosphere and Microstructure Development of Chromium Alloyed Steel

Sepehr Hatami, Eduard Hryha, Lars Nyborg et al
Powder Metallurgy Progress. Vol. 8 (2), p. 115-120
Scientific journal article - peer reviewed
2008

Study of Reduction/Oxidation Processes in Cr-Mo Prealloyed Steels during Sintering by Continuous Atmosphere Monitoring

Eduard Hryha, L Cajkova, E Dudrova et al
Proceedings of European Congress & Exhibition in Powder Metallurgy EURO PM 2008, p. 109-114
Conference paper - peer reviewed