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Philippe Spätig

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Related publications (46)

Microstructure and mechanical properties of a W-2wt.%Y2O3 composite produced by sintering and hot forging

Nadine Baluc, Philippe Spätig, Robin Schäublin

A W-2Y(2)O(3) composite has been developed by powder metallurgy methods in collaboration with the Plansee Company (Austria). The microstructure of the composite was analyzed using transmission electron microscopy and electron backscatter diffraction in sca ...

2013

W-2 wt.%Y2O3 composite: Microstructure and mechanical properties

Nadine Baluc, Philippe Spätig, Robin Schäublin

A W-2Y(2)O(3) composite is produced by powder metallurgy, including the pressing of the mixed elemental powders, their sintering and hot forging. The microstructure of the obtained composite is investigated using light microscopy, scanning electron microsc ...

2012

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

Effect of thermo-mechanical treatments on the microstructure and mechanical properties of an ODS ferritic steel

Nadine Baluc, Philippe Spätig, Zbigniew Oksiuta, Pablo Federico Mueller

The Fe-14Cr-2W-0.3Ti-0.3Y(2)O(3) oxide dispersion strengthened (ODS) reduced activation ferritic (RAF) steel was fabricated by mechanical alloying of a pre-alloyed, gas atomised powder with yttria nano-particles, followed by hot isostatic pressing and ther ...

Elsevier2011

Strain-rate behavior in tension of the tempered martensitic reduced activation steel Eurofer97

Philippe Spätig

The tensile properties of the high-chromium tempered martensitic reduced activation steel Eurofer97 were determined from tests carried out over a wide range of strain-rates on cylindrical specimens. The quasi-static tests were performed with a universal el ...

Elsevier2011

Numerical investigation by finite element simulations of the ball punch test: Application to tempered martensitic steels

Philippe Spätig, Emiliano Campitelli

The effects of the post-yield behaviour on the shape of small ball punch test (SBPT) curves were investigated with finite element simulations from which the load-deflection curves were extracted. We have shown the general yield load defined on the ball pun ...

Elsevier2009

Fracture toughness master-curve analysis of the tempered martensitic steel Eurofer97

Philippe Spätig, Raul Alejandro Bonadé, Pablo Federico Mueller

We report fracture toughness data for the reduced activation tempered martensitic steel Eurofer97 in the lower to middle transition region. The fracture toughness was measured from tests carried out on 0.35T and 0.87T pre-cracked compact tension specimens. ...

Elsevier2009

Assessment of irradiation embrittlement of the Eurofer97 steel after 590 MeV proton irradiation

Philippe Spätig, Pablo Federico Mueller

The irradiation hardening of the Eurofer97 steel following 590 MeV proton irradiations was determined at three different irradiation temperatures, 50 °C, 250 °C and 350 °C, and various doses up to about 1.3 displacement per atom. The dose and temperature d ...

Elsevier2009

3D finite element and experimental study of the size requirements for measuring toughness on tempered martensitic steels

Philippe Spätig, Pablo Federico Mueller

The fracture properties of the tempered martensitic steel Eurofer97, which is among the main candidates for fusion power plant structural applications, were studied with two sizes of pre-cracked compact specimens (0.35T C(T) and 0.87T C(T)). The fracture t ...

Elsevier2009

Recent progress toward development of reduced activation ferritic/martensitic steels for fusion applications

Philippe Spätig

Significant progress has been achieved in the international research effort on reduced activation ferritic/martensitic steels for fusion structural applications. Because this class of steels is the leading structural material for test blankets in ITER and ...

Elsevier2009

The evolution of the mobile dislocation density during successive stress relaxation transients

Philippe Spätig, Raul Alejandro Bonadé

The successive stress-relaxation (SSR) experiment is a well- known technique that is mainly used to study different aspects of the plastic deformation phenomena. The technique has been described extensively elsewhere [L.P. Kubin, Philos. Mag. 30 (1974) 705 ...

Elsevier2008

Fracture properties of notched and pre-cracked specimens of a tempered martensitic steel at low temperature

Philippe Spätig, Raul Alejandro Bonadé, Pablo Federico Mueller

The fracture properties of the 9CrWVTa reduced-activation tempered martensitic steel Eurofer97 were studied in the lower ductile to brittle transition. Sub-sized pre-cracked compact tension and notched tensile specimens were tested. Finite element simulati ...

2008

Fracture toughness behavior in the ductile-brittle transition region of the tempered martensitic Eurofer97 steel: Experiments and modeling

Philippe Spätig, Raul Alejandro Bonadé, Pablo Federico Mueller

The fracture toughness of the tempered martensitic stainless steel Eurofer97 has been experimentally characterized in the ductile-to-brittle transition (DBT) region with sub-sized compact tension specimens. The median fracture toughness–temperature curve i ...

Elsevier2008

Analysis of high temperature deformation mechanism in ODS EUROFER97 alloy

Philippe Spätig, Robin Schäublin, Amuthan Ramar

2008

The role of small specimen test technology in fusion materials development

Philippe Spätig, Guillaume Lucas

Small specimen test technology (SSTT) has long been an integral part of fusion materials development. Past work has led to an array of techniques that not only have provided a means of efficiently using available irradiation volumes but have also led to im ...

2007

Fracture toughness properties in the transition region of the Eurofer97 tempered martensitic steel

Nadine Baluc, Philippe Spätig, Raul Alejandro Bonadé

A fracture toughness database obtained on the Eurofer97 steel (25 mm plate, heat 83697) is presented. The material has been tested in the 'as-received' condition in the lower transition region at temperatures ranging from 173 K down to 123 K. Sub-sized (0. ...

2007

Plastic flow properties and fracture toughness characterization of unirradiated and irradiated tempered martensitic steels

Philippe Spätig, Raul Alejandro Bonadé, Emiliano Campitelli, Pablo Federico Mueller

We investigate the plastic flow properties at low and high temperature of the tempered martensitic steel Eurofer97. We show that below room temperature, where the Peierls friction on the screw dislocation is active, it is necessary to modify the usual Tayl ...

2007

The European effort towards the development of a demo structural material: Irradiation behaviour of the European reference RAFM steel EUROFER

Philippe Spätig

Worldwide programs aimed at developing materials for future fusion plants are presently concentrating on reduced activation ferritic/martensitic (RAFM) steels. In Europe, a Fusion Long Term Programme is being carried out under the coordination of European ...

2006

Deformation behaviour and microstructure of nanocrystalline electrodeposited and high pressure torsioned nickel

Philippe Spätig, Robin Schäublin, Florian Dalla Torre

Microstructural analysis and mechanical testing have been performed on two types of nanocrystalline (NC) Ni samples and compared to coarse-grained (CG) Ni. The NC electrodeposited (ED) Ni is characterized by a mean grain size of 21 nm, a narrow grain size ...

2005

Assessment of plastic flow and fracture properties with small specimen test techniques for IFMIF-designed specimens

Nadine Baluc, Philippe Spätig, Raul Alejandro Bonadé, Emiliano Campitelli

The primary mission of the international fusion material irradiation facility (IFMIF) is to generate a material database to be used for the design of various components, for the licensing and for the assessment of the safe operation of a demonstration fusi ...

IOP Publishing Ltd2005

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