Publications de Nazar Ilchuk | EPFL Graph Search

Effect of residual stresses on notch toughness of the tempered martensitic steel F82H-MOD

Philippe Spätig, Nazar Ilchuk, Hans-Peter Seifert, Vadim Davydov

2017

Analytical determination of the constitutive behavior from micro-pillar testing: Application to a tempered martensitic steel

Philippe Spätig, Nazar Ilchuk, Hans-Peter Seifert

Micro-compression experiments were carried out on micro-pillars, with nominal diameter of 10 mu m and height 20 mu m, and fabricated from a high-chromium tempered martensitic steels developed for nuclear applications. An analytical method was proposed to c ...

2014

Measurement of residual stresses around the notch of tensile specimens of the high-Cr tempered martensitic steel F82H-mod

Philippe Spätig, Nazar Ilchuk, Steven Van Petegem, Vadim Davydov

Residual elastic strains were measured by neutron diffraction using POLDI facility at PSI-Switzerland on pre-loaded notched flat tensile specimens made of the high-chromium tempered martensitic steel F82H-mod steel. To calculate the residual stresses using ...

2014

Measurement of residual stresses around the notch of tensile specimens of the high-Cr tempered martensitic steel F82H-mod

Philippe Spätig, Nazar Ilchuk, Steven Van Petegem, Vadim Davydov

Residual elastic strains were measured by neutron diffraction using POLDI materials science diffractometer at PSI-Switzerland on pre-loaded notched flat tensile specimens made of the high-chromium tempered martensitic steel F82H-mod steel. To calculate the ...

Trans Tech Publications Ltd2014

Fracture toughness characterization in the lower transition of neutron irradiated Eurofer97 steel

Philippe Spätig, Nazar Ilchuk

This research investigated the evolution of tensile, hardness, and fracture properties of Eurofer97 tempered martensitic steel following neutron irradiation. The irradiation-hardening was measured with Vickers hardness tests on broken parts of sub-sized co ...

2013

On determination of the constitutive behavior of tempered martensitic steels from micro-indentations: Application to Eurofer97 steel

Philippe Spätig, Nazar Ilchuk

This paper proposes a simple but powerful approach to determine the constitutive equation of tempered martensitic steels from micro-hardness tests. Finite element simulations were used to investigate the plastic flow in the contact region between the tip a ...

Elsevier Science Bv2013

Effect of warm pre-stressing on fracture toughness of Eurofer97 steel

Philippe Spätig, Nazar Ilchuk

Experiments and finite element simulations have been carried out to assess the warm pre-stressing effects on the effective fracture toughness of the high-chromium reduced activation tempered martensitic steel Eurofer97. The experiments have been conducted ...

Elsevier Science Sa2013

Characterization and modeling of neutron irradiation, pre-deformation and warm prestressing effects on the fracture behavior of the tempered martensitic steel Eurofer97

Nazar Ilchuk

EPFL2013

From materials development to their test in IFMIF: an overview

Nadine Baluc, Minh Quang Tran, Philippe Spätig, Robin Schäublin, Zbigniew Oksiuta, Lyubomira Veleva, Nazar Ilchuk

R&D activities on fusion reactor materials in Switzerland focus on (1) the development of advanced metallic materials for structural applications in plasma-facing (first wall, divertor) and breeding blanket components of the future fusion power reactors, i ...

IOP Publishing Ltd2011