Eduard Hryha

Biträdande professor at 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 Surface and Microstructure Engineering
VINNOVA

2016–2020

Nanotechnology Enhanced Sintered Steel Processing

Lars Nyborg Materials and Manufacturing Technology
Johan Liu Microtechnology and Nanoscience (MC2)
Eduard Hryha 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 Materials and Manufacturing Technology
Seshendra Karamchedu Surface and Microstructure Engineering
Eduard Hryha Surface and Microstructure Engineering
Maheswaran Vattur Sundaram Surface and Microstructure Engineering
VINNOVA

2014–2016

Strategic Research Area No.1 Modelling - Phase II

Lars Nyborg Materials and Manufacturing Technology
Fang Liu Materials Microstructure
Eduard Hryha Surface and Microstructure Engineering
Martin Fagerström Material and Computational Mechanics
VINNOVA

2012–2013

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

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

2014–2017

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

Lars Nyborg Materials and Manufacturing Technology
Eduard Hryha Surface and Microstructure Engineering
Maheswaran Vattur Sundaram 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

Surface chemistry of the titanium powder studied by XPS using internal standard reference

Eduard Hryha, Lars Nyborg, Ruslan Shvab
Powder Metallurgy. Vol. 60 (1), p. 42-48
Journal article
2017

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

L. Alzati, R. Gilardi, Eduard Hryha et al
International Journal of Refractory Metals and Hard Materials. Vol. 63, p. 9-16
Journal article
2017

COPGLOW and XPS investigation of recycled metal powder for selective laser melting

M. Randelius, A. Strondl, Lars Nyborg et al
Powder Metallurgy. Vol. 60 (3), p. 223-231
Journal article
2016

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

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

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

Eduard Hryha, Felicia Suska, A. Snis et al
Journal of Oral and Maxillofacial Surgery. Vol. 74 (8), p. 1706.e1-1706.e16
Journal article
2016

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

Eduard Hryha, Ola Bergman, Ruslan Shvab et al
Paper in proceedings
2016

Vacuum Sintering Studies On Chromium Alloyed PM Steels

Maheswaran Vattur Sundaram, Eduard Hryha, Seshendra Karamchedu et al
Paper in proceedings
2016

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

Björn-Olof Bengtsson, Eduard Hryha, MAGNUS AHLFORS et al
Paper in proceedings
2016

Copper Bronze Powder Surface Studied by XPS and HR SEM

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

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

Eduard Hryha, Ruslan Shvab, Lars Nyborg et al
Paper in proceedings
2016

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

Eduard Hryha, Martin Bram, Martin Bitzer et al
Applied Surface Science, p. 294-303
Journal article
2016

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

Eduard Hryha, Christos Oikonomou, Lars Nyborg
Surface and Interface Analysis. Vol. 48 (7), p. 445-450
Journal article
2016

As-HIP Microstructure Of EBM Fabricated Shell Components

Eduard Hryha, MAGNUS AHLFORS, Lars Nyborg et al
Paper in proceedings
2016

Surface Characterization Of 60Cu-40Sn Bronze Powder

Eduard Hryha, Abdul Malik Tahir, Lars Nyborg et al
Paper in proceedings
2016

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

Eduard Hryha, Niklas Petterson, Lars-Erik Rännar et al
Paper in proceedings
2015

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

J. Cizek, I. Dlouhy, I. Moravcik et al
Paper in proceedings
2015

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

Christian Gierl-Mayer, Herbert Danninger, Eduard Hryha et al
International Journal of Powder Metallurgy (Princeton, New Jersey). Vol. 51 (3), p. 47-53
Journal article
2015

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

Dmitri Riabov, Sigurd Berg, Seshendra Karamchedu et al
Journal of the American Ceramic Society. Vol. 98 (11), p. 3561-3568
Journal article
2015

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

Lars Nyborg, Eduard Hryha
International Journal of Powder Metallurgy (Princeton, New Jersey). Vol. 51 (3), p. 35-46
Journal article
2015

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

Lars Nyborg, Stephan Huth, K. Lefor et al
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science. Vol. 46 (3), p. 1154-1167
Journal article
2015

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

Eduard Hryha, L Radicchi, Raquel Oro et al
roceedings EURO PM2015 Congress & Exhibition, 4-7 October 2015, Reims, France, p. 1-6
Paper in proceedings
2015

Lean Atmospheres for Sintering of Chromium Alloyed Powder Metallurgy Steels

Eduard Hryha, Seshendra Karamchedu, Lars Nyborg
Journal of the American Ceramic Society. Vol. 98 (11), p. 3588-3595
Journal article
2015

Interparticle Neck Connections in Innovative Insulated Iron Powder Compounds

Marco Actis Grande, Raquel De Oro Calderón, Marco Maccarini et al
Journal of Logic and Computation. Vol. 128 (4), p. 647-650
Journal article
2015

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

Luigi Alzati, Lars Nyborg, Eduard Hryha
Powder Metallurgy. Vol. 58 (1), p. 7-11
Journal article
2015

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

R. Bidulsky, J. Bidulska, Eduard Hryha
High Temperature Materials and Processes. Vol. 35 (9), p. 865-870
Journal article
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
Journal of Materials Processing Technology. Vol. 223, p. 171-185
Journal article
2015

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

R. Bidulsky, J. Bidulska, Eduard Hryha
High Temperature Materials and Processes. Vol. 35 (9), p. 865-870
Journal article
2015

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

W. Theisen, Eduard Hryha, Stephan Huth et al
Surface and Interface Analysis. Vol. 47 (3), p. 413-422
Journal article
2014

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

Petro Shykula, Eva Dudrova, Eduard Hryha et al
Powder Metallurgy Progress. Vol. 14 (2), p. 99-107
Journal article
2014

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

Eduard Hryha, Sven Bengtsson, Petro Shykula et al
Materials Science Forum. Vol. 782, p. 473-479
Journal article
2014

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

Herbert Danninger, Raquel De Oro Calderón, Christian Gierl-Mayer et al
Advances in Powder Metallurgy & Particulate Materials-2014. Vol. 5, p. 74-85
Paper in proceedings
2014

Optimization of Carbothermal Reactions for Producing Nanostructured Tungsten Carbide Powders

Lars Nyborg, Raquel De Oro Calderón, Raffaele Gilardi et al
Paper in proceedings
2014

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

Christos Oikonomou, Lars Nyborg, Eduard Hryha et al
Materials Science & Engineering B: Solid-State Materials for Advanced Technology. Vol. 189, p. 90-99
Journal article
2014

Investigation of Low Temperature Creep Behaviour of PM Steels

Lars Nyborg, Maheswaran Vattur Sundaram, Michael Andersson et al
Powder Metallurgy Progress. Vol. 14 (2), p. 67-72
Journal article
2014

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

Lars Nyborg, Raffaele Gilardi, Raquel De Oro Calderón 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
Paper in proceedings
2014

Development of methodology for surface characterization of vanadium containing slag

Johan Björkvall, Elin Rutqvist, Lars Nyborg et al
Surface and Interface Analysis. Vol. 46 (10-11), p. 984-988
Journal article
2014

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

Lars Nyborg, Eduard Hryha
Powder Metallurgy. Vol. 57 (4), p. 245-250
Journal article
2014

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

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

The Role of Carbon Source in the Production of WC Powders

Lars Nyborg, Raquel De Oro Calderón, 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. 37-44
Paper in proceedings
2014

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

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

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

Lars Nyborg, Eduard Hryha, Christos Oikonomou et al
Surface and Interface Analysis. Vol. 46 (10-11), p. 1028-1032
Journal article
2014

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

Eduard Hryha, Raquel De Oro Calderón, Monica Campos Gomez et al
Materials Characterization. Vol. 95, p. 105-117
Journal article
2014

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

Maheswaran Vattur Sundaram, Eduard Hryha, Lars Nyborg
Powder Metallurgy Progress. Vol. 14 (2), p. 85-92
Journal article
2014

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

Lars Nyborg, Eduard Hryha
Materials Science Forum. Vol. 782, p. 467-472
Journal article
2014

Surface Oxides on Gas and Water Atomized Steel Powders

Eduard Hryha, Lars Nyborg
Advances in Powder Metallurgy & Particulate Materials-2014. Vol. 2, p. 2153-2161
Paper in proceedings
2014

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

Luigi Alzati, Raquel De Oro Calderón, Eduard Hryha 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
Paper in proceedings
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
Journal article
2014

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

Dimitris Chasoglou, Eduard Hryha, Ola Bergman
Advances in Powder Metallurgy & Particulate Materials-2014. Vol. 5, p. 142-153
Paper in proceedings
2014

Carbon control in PM Sintering

Sören Wiberg, Sigurd Berg, Gerd Waning et al
Journal of Logic and Computation. Vol. 12 (1), p. 33-39
Journal article - popular science
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
Paper in proceedings
2014

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

Lars Nyborg, Karin Sterky, Henrik Borgström et al
Journal of Thermal Analysis and Calorimetry. Vol. 118 (2), p. 695-704
Journal article
2014

Investigation of Low Temperature Creep Behaviour of PM Steels

Kumar Babu Surreddi, Gunnar Åkerström, Michael Andersson et al
Powder Metallurgy Progress. Vol. 14 (2), p. 67-72
Journal article
2014

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

Lars Nyborg, Eduard Hryha
Advances in Powder Metallurgy & Particulate Materials-2014. Vol. 5, p. 163-177
Paper in proceedings
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
Paper in proceedings
2013

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

Lars Nyborg, Dimitris Chasoglou, Eduard Hryha
Materials Chemistry and Physics. Vol. 138 (1), p. 405-415
Journal article
2013

Parameters Controlling the Oxide Reduction during Sintering of Chromium Prealloyed Steel

Margita Kabatova, Eduard Hryha, Eva Dudrova et al
Advances in Materials Science and Engineering
Journal article
2013

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

Luigi Alzati, Lars Nyborg, Eduard Hryha
Proceedings EURO PM2013 Congress & Exhibition, 15-18 September 2013, Gothenburg, Sweden. Vol. 2, p. 303-310
Paper in proceedings
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
Paper in proceedings
2013

Kohlenstoffreggelung beim Sintern

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

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

Mats Norell, Eduard Hryha, Lars Nyborg et al
Applied Surface Science. Vol. 268, p. 496-506
Journal article
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
Paper in proceedings
2013

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

Jose Manuel Torralba Castello, Monica Campos Gomez, Eduard Hryha et al
Materials Characterization. Vol. 86, p. 80-91
Journal article
2013

Influence of delubrication process on the properties of sintered PM components

Lars Nyborg, Seshendra Karamchedu, Eduard Hryha
Proceedings of Euro PM2013. Vol. 2, p. 163-168
Paper in proceedings
2013

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

Eduard Hryha, Christos Oikonomou, Lars Nyborg et al
Euro PM2013 Proceedings. Vol. 2, p. 205-212
Paper in proceedings
2013

PM parts sintered state improvement achieved by carbon source selection

Eduard Hryha, R. Gilardi, Lars Nyborg et al
2013 International Conference on Powder Metallurgy and Particulate Materials, PowderMet 2013, p. 516-524
Paper in proceedings
2013

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

Eduard Hryha, Ola Bergman, Sven Bengtsson et al
Powder Metallurgy Progress. Vol. 13 (2), p. 57-62
Journal article
2013

Carbon control in PM sintering: industrial applications and experience

Lars Nyborg, S. Wiberg, S. Berg et al
Powder Metallurgy. Vol. 56 (1), p. 5-10
Journal article
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
Paper in proceedings
2013

Low Temperature Creep Behavior of PM Components Under Static Load Conditions

Michael Andersson, Kumar Babu Surreddi, Maheswaran Vattur Sundaram et al
Proceedings of Euro PM2013. Vol. 3, p. 349-354
Paper in proceedings
2013

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

Eduard Hryha, Raffaele Gilardi, Lars Nyborg 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
Paper in proceedings
2013

Lean atmospheres for sintering chromium alloyed PM steels

Sören Wiberg, Eduard Hryha, Seshendra Karamchedu et al
Proceedings of Euro PM2013. Vol. 2, p. 353-358
Paper in proceedings
2013

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

Eduard Hryha, Lars Nyborg
Proceedings EURO PM2013 Congress & Exhibition, 15-18 September 2013, Gothenburg, Sweden (2), p. 199-204
Paper in proceedings
2012

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

Eduard Hryha, Sören Wiberg, Akin Malas et al
Proc. of EURO PM2012 Congress & Exhibition, 16-19 September 2012, Basel, Switzerland. Vol. 1, p. 265-270
Paper in proceedings
2012

Process Control System for Delubrication of PM Steels

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

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

Anna Weddeling, Huth Stephan, Lars Nyborg et al
Proceedings EURO PM2012 Congress & Exhibition, 16-19 September 2012, Basel, Switzerland. Vol. 1, p. 375-380
Paper in proceedings
2012

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

Lars Nyborg, Seshendra Karamchedu, Eduard Hryha
Paper in proceedings
2012

Development of methodology for surface analysis of soft magnetic composite powders

Christos Oikonomou, Eduard Hryha, Lars Nyborg
Surface and Interface Analysis. Vol. 44 (8), p. 1166-1170
Journal article
2012

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

Eduard Hryha, Eva Dudrova, Lucia Ciripova et al
Materials and Design. Vol. 35 (1), p. 619-625
Journal article
2012

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

Eduard Hryha, Seshendra Karamchedu, Lars Nyborg
Conference poster
2012

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

Eva Dudrova, Eduard Hryha, Lars Nyborg
Journal of Materials Processing Technology. Vol. 212 (4), p. 977-987
Journal article
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
Paper in proceedings
2012

Stoichiometric Vanadium Oxides Studied by XPS

Elin Rutqvist, Eduard Hryha, Lars Nyborg
Surface and Interface Analysis. Vol. 44 (8), p. 1022-1025
Journal article
2012

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

Anna Weddeling, Stephan Huth, W. Theisen et al
Materials Characterization. Vol. 71, p. 66-76
Journal article
2012

Surface Chemical Analysis of Soft Magnetic Composite Podwers

Christos Oikonomou, Lars Nyborg, Eduard Hryha
Conference poster
2011

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

Lars Nyborg, Eduard Hryha, Dimitris Chasoglou
Proceedings of EURO PM 2011 International Powder Metallurgy Congress & Exhibition, 9th-12th October 2011, Barcelona. Vol. 3, p. 111-117
Paper in proceedings
2011

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

Eduard Hryha, Lars Nyborg, Dimitris Chasoglou
Powder Metallurgy Progress. Vol. 11 (1-2), p. 32-41
Journal article
2011

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

Eduard Hryha, Seshendra Karamchedu, Lars Nyborg
Proc. of EURO PM2011 Congress & Exhibition, 9-12 October 2011, Barcelona, Spain. Vol. 3, p. 105-110
Paper in proceedings
2011

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

Jose Manuel Torralba, Lars Nyborg, Eduard Hryha et al
Proc. of EURO PM2011 Congress & Exhibition, 9-12 October 2011, Barcelona, Spain. Vol. 1, p. 113-117
Paper in proceedings
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
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
Journal article
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
Paper in proceedings
2011

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

Eduard Hryha, Sebastian Weber, Kathrin Zumsande et al
Proc. of EURO PM2011 Congress & Exhibition, 9-12 October 2011, Barcelona, Spain. Vol. 2, p. 15-20
Paper in proceedings
2011

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

M. Rosso, Eva Dudrova, M. Kabatova et al
Materials Science Forum. Vol. 672, p. 31-38
Journal article
2011

INFLUENCE OF PROCESS PARAMETERS ON DELUBRICATION OF PM STEELS

Eduard Hryha, Seshendra Karamchedu, Lars Nyborg
Powder Metallurgy Progress. Vol. 11 (1-2), p. 90-96
Journal article
2010

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

M Actis Grande, Robert Bidulsky, Eduard Hryha et al
Acta Metallurgica Slovaca - Conference. Vol. 1, p. 580-585
Journal article
2010

Surface composition of the steel powders pre-alloyed with manganese

Herbert Danninger, Eva Dudrova, Eduard Hryha et al
Applied Surface Science. Vol. 256 (12), p. 3946-3961
Journal article
2010

Surface Analysis of Prealloyed Steel Powders: Qualitative and Quantitative Aspects

Herbert Danninger, Lars Nyborg, Christian 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
Paper in proceedings
2010

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

M Actis Grande, Eduard Hryha, 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
Paper in proceedings
2010

Sintered Steels Prealloyed with Manganese – Chances and Risks

Christian Gierl, Herbert Danninger, Sven Bengtsson 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
Paper in proceedings
2010

Oxide Distribution in Prealloyed Water Atomized Steel Powder

Dimitris Chasoglou, Lars Nyborg, Eduard Hryha
World Powder Metallurgy Congress and Exhibition, World PM 2010; Florence; Italy; 10 October 2010 through 14 October 2010. Vol. 1, p. 61-69
Paper in proceedings
2010

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

Dimitris Chasoglou, Lars Nyborg, Eduard Hryha
World Powder Metallurgy Congress and Exhibition, World PM 2010; Florence; Italy; 10 October 2010 through 14 October 2010. Vol. 2, p. 3-12
Paper in proceedings
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
Paper in proceedings
2010

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

Dimitris Chasoglou, Eduard Hryha, Lars Nyborg
Powder Metallurgy Progress. Vol. 9(2009) (3), p. 141-155
Journal article
2010

Sintered Steels Alloyed with Manganese: Effect of Alloying Mode

Eva Dudrova, Sven Bengtsson, Lars Nyborg 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
Paper in proceedings
2010

Oxide Distribution in Prealloyed Water Atomized Steel Powder

Lars Nyborg, Dimitris Chasoglou, Eduard Hryha
World Powder Metallurgy Congress and Exhibition, World PM 2010; Florence; Italy; 10 October 2010 through 14 October 2010. Vol. 1, p. 61-69
Paper in proceedings
2010

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

M Actis Grande, J. Bidulska, Robert Bidulsky 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
Paper in proceedings
2010

Critical Aspects of Alloying of Sintered Steels with Manganese

Eduard Hryha, Lars Nyborg, Eva Dudrova
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science. Vol. 41A (11), p. 2880-2897
Journal article
2010

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

Eduard Hryha, Dimitris Chasoglou, Lars Nyborg
World Powder Metallurgy Congress and Exhibition, World PM 2010; Florence; Italy; 10 October 2010 through 14 October 2010. Vol. 2, p. 3-12
Paper in proceedings
2009

An application of universal hardness test to metal powder

Eva Dudrova, Pavel Zubko, Ladislav Pešek et al
Journal of Materials Processing Technology. Vol. 209 (5), p. 2377-2385
Journal article
2009

Surface Analysis of Prealloyed with Manganese Steel Powder

Eduard Hryha, Lars Nyborg, Sven Bengtsson
Proceedings of Euro PM2009 Conference&Exhibition. Vol. 2, p. 169-174
Paper in proceedings
2009

Powder Properties, Compacting and Sintering

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

Microstructure Development during Sintering of Manganese Alloyed PM Steels

Lars Nyborg, Sven Bengtsson, Eduard Hryha et al
Proceedings Of Euro PM2009 Congress&Exhibition. Vol. 1, p. 17-22
Paper in proceedings
2009

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

Dimitris Chasoglou, Lars Nyborg, Eduard Hryha
Proceedings of XXV Panhellenic Conference on Solid State Physics & Materials Science, p. 267-268
Paper in proceedings
2009

Methodology for Evaluating the Oxide Distribution in Water Atomized Steel Powder

Eduard Hryha, Dimitris Chasoglou, Lars Nyborg
Proceedings of EURO PM 2009 International Powder Metallurgy Congress & Exhibition. Vol. 2, p. 181-186
Paper in proceedings
2008

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

E Dudrova, Lars Nyborg, Sven Bengtsson et al
Powder Metallurgy Progress. Vol. 8 (2), p. 109-114
Journal article
2008

Modelling of Sintering Atmosphere and Microstructure Development of Chromium Alloyed Steel

Eduard Hryha, Lars Nyborg, Daniel Nilsson et al
Powder Metallurgy Progress. Vol. 8 (2), p. 115-120
Journal article
2008

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

L Cajkova, Lars Nyborg, Eduard Hryha et al
Proceedings of European Congress & Exhibition in Powder Metallurgy EURO PM 2008, p. 109-114
Paper in proceedings