Dimitrios Nikas

Publikationer (15)
Projekt (0)

Visar 15 publikationer

2022

Effect of annealing on microstructure in railway wheel steel

Dimitrios Nikas, Yubin Zhang, Johan Ahlström

42ND RISO INTERNATIONAL SYMPOSIUM ON MATERIALS SCIENCE: MICROSTRUCTURAL VARIABILITY: PROCESSING, ANALYSIS, MECHANISMS AND PROPERTIES. Vol. 1249

Paper i proceeding

2022

Stress relief during annealing of railway wheel steel characterized by synchrotron X-ray micro-diffraction

Yubin Zhang, Casey Jessop, Dimitrios Nikas et al

42ND RISO INTERNATIONAL SYMPOSIUM ON MATERIALS SCIENCE: MICROSTRUCTURAL VARIABILITY: PROCESSING, ANALYSIS, MECHANISMS AND PROPERTIES. Vol. 1249

Paper i proceeding

2021

Modelling of temperature and strain rate dependent behaviour of pearlitic steel in block braked railway wheels

Ali Esmaeili, Johan Ahlström, Magnus Ekh et al

Railway Engineering Science. Vol. 29 (4), p. 362-378

Artikel i vetenskaplig tidskrift

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2019

High temperature bi-axial low cycle fatigue behaviour of railway wheel steel

Dimitrios Nikas, Johan Ahlström

ICMFF12 - 12TH INTERNATIONAL CONFERENCE ON MULTIAXIAL FATIGUE AND FRACTURE. Vol. 300

Paper i proceeding

2018

Microstructure and mechanical properties of the running band in a pearlitic rail steel: Comparison between biaxially deformed steel and field samples

Knut Andreas Meyer, Dimitrios Nikas, Johan Ahlström

Wear. Vol. 396-397, p. 12-21

Artikel i vetenskaplig tidskrift

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2018

Influence of combined thermal and mechanical loadings on pearlitic steel microstructure in railway wheels and rails

Dimitrios Nikas

Doktorsavhandling

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2018

Evaluation of local strength via microstructural quantification in a pearlitic rail steel deformed by simultaneous compression and torsion

Dimitrios Nikas, X. Zhang, Johan Ahlström

Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing. Vol. 737, p. 341-347

Artikel i vetenskaplig tidskrift

2017

Characterization of deformed pearlitic rail steel

Dimitrios Nikas, Knut Andreas Meyer, Johan Ahlström

IOP Conference Series: Materials Science and Engineering. Vol. 219 (1), p. Art no:UNSP 012035-

Paper i proceeding

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2016

Effect of Temperature on Mechanical Properties of Railway Wheel Steels

Dimitrios Nikas

Licentiatavhandling

2016

Mechanical properties and fatigue behaviour of railway wheel steels as influenced by mechanical and thermal loadings

Dimitrios Nikas, Johan Ahlström, Amir Malakizadi

Wear. Vol. 366 (SI), p. 407-415

Artikel i vetenskaplig tidskrift

2015

High Temperature Tread Braking Simulations Employing Advanced Modelling of Wheel Materials

Ali Esmaeili, Tore V Vernersson, Dimitrios Nikas et al

IHHA 2015,Perth,Australia

Paper i proceeding

2015

Mechanical properties and fatigue behavior of railway wheel steels as influenced by mechanical and thermal loadings

Dimitrios Nikas, Johan Ahlström, Amir Malakizadi

10th International Conference on Contact Mechanics of Wheel / Rail Systems, CM 2015, Colorado Springs, United States, 30 August - 3 September 2015

Paper i proceeding

2015

Characterization of microstructural changes in near pearlitic steels using orientation imaging microscopy - influence of pre-deformation on local sensitivity to thermal degradation

Dimitrios Nikas, Johan Ahlström

IOP Conference Series: Materials Science and Engineering. Vol. 89 (1), p. Art. no. 012039-

Paper i proceeding

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

Artikel i vetenskaplig tidskrift

2014

Thermal deterioration of railway wheel steels

Dimitrios Nikas, Johan Ahlström

35th Risø International Symposium on Materials Science,Risø,Denmark, 09/2014

Paper i proceeding

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