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Robin Schäublin

Cette personne a quitté l’EPFL

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Publications associées (64)

Page 1 sur 4

Influence of the stress field due to pressurized nanometric He bubbles on the mobility of an edge dislocation in iron

Robin Schäublin, Seyed Masood Hafez Haghighat

Voids and He bubbles are strong obstacles to dislocation, which induce hardening and loss of ductility. In Fe, molecular dynamics simulation is used to investigate the basic mechanisms of the interaction between a moving edge dislocation and a void or He b ...

Taylor & Francis2010

Strengthening due to Cr-rich precipitates in Fe–Cr alloys: Effect of temperature and precipitate composition

Robin Schäublin, Seyed Masood Hafez Haghighat

Molecular dynamics (MD) simulations were carried out to study the interaction between nanometric Cr precipitates and a 1/2 < 111 >>{110} edge dislocation (ED) in pure Fe and Fe-9 at. % Cr (Fe-9Cr) random alloy. The aim of this work is to estimate the vari ...

American Institute of Physics2010

Slow Down Density of Recoils Produced by 14 MeV Neutron in LiD

Robin Schäublin

Full text of publication follows: The slow down density of recoils produced by 14 MeV neutron in LiD is investigated. Of particular interest are the deuterium (D) recoils in the energy range of 0.1 to 12.444 MeV to bombard the tritium in LiD to induce the ...

2007

Study of cascades damage in Ni by MD with different interatomic potentials

Robin Schäublin, Zhongwen Yao

Molecular dynamics (MD) simulations, performed with embedded atom potentials, are used to understand the formation of defects following displacement cascades in Ni. Different empirical potentials, presenting large differences in stacking fault energy (SFE) ...

2007

Molecular dynamics simulation of radiation damage in bcc tungsten

Robin Schäublin

Molecular dynamics (MD) simulations are performed to assess the primary damage due to high-energy neutron irradiation in bcc tungsten. For short-range interactions two different universal potentials are used, while for long-range interactions, two empirica ...

2007

Fabrication of curved-line nanostructures on membranes for transmission electron microscopy investigations of domain walls

Robin Schäublin

We have fabricated curved-line ferromagnetic nanostructures on membranes for transmission electron microscopy investigations of the equilibrium magnetic spin configurations. The magnetic elements were fabricated using electron-beam lithography and a lift-o ...

2006

Impact of He and Cr on defect accumulation in ion-irradiated ultrahigh-purity Fe(Cr) alloys

Robin Schäublin, Amuthan Ramar, Anna Prokhodtseva

The effect of He on the primary damage induced by irradiation in ultrahigh-purity (UHP) Fe and Fe(Cr) alloys was investigated by transmission electron microscopy (TEM). Materials were irradiated at room temperature in situ by TEM in a microscope coupled to ...

Pergamon-Elsevier Science Ltd2013

Dislocation-void interaction in Fe: a comparison between molecular dynamics and dislocation dynamics

Robin Schäublin, Seyed Masood Hafez Haghighat

Multiscale modeling, including molecular dynamics (MD) and discrete dislocation dynamics (DDD) methods, appears as a signiﬁcant tool for the description of plasticity and mechanical properties of materials. This research concerns the inﬂuence of irradiatio ...

2009

Microstructural development under irradiation in European ODS ferritic/martensitic steels

Nadine Baluc, Robin Schäublin, Amuthan Ramar

Oxide dispersion strengthened steels based on the ferritic/martensitic steel EUROFER97 are promising candidates for a fusion reactor because of their improved high temperature mechanical properties and their potential higher radiation resistance relative t ...

2006

From materials development to their test in IFMIF: an overview

Minh Quang Tran, Nadine Baluc, Philippe Spätig, Robin Schäublin, 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

Molecular dynamics simulation of radiation damage in bcc tungsten

Robin Schäublin

Molecular dynamics simulations of collision cascades in pure tungsten are performed to assess the primary damage due to irradiation. For short-range interaction the universal potential is used [J.F. Ziegler, J.P. Biersack, U. Littmark, The Stopping and Ran ...

Elsevier2009

Effects of irradiation on the microstructure and mechanical properties of nanostructured materials

Robin Schäublin

Nanostructured materials should present a good resistance to irradiation because the large volume fraction of grain boundaries can be an important sink for radiation-induced defects. The objective of the present study is to experimentally investigate the i ...

2005

Welding-induced microstructure in austenitic stainless steels before and after neutron irradiation

Nadine Baluc, Robin Schäublin

The effects of neutron irradiation on the microstructure of welded joints made of austenitic stainless steels have been investigated. The materials were welded AISI 304 and AISI 347, so-called test weld materials, and irradiated with neutrons at 300 degree ...

2007

Processing and characterization of a W–2Y material for fusion power reactors

Nadine Baluc, Robin Schäublin, Lyubomira Veleva

A W-2Y material has been produced by powder metallurgy techniques including mechanical alloying of W and Y elemental powders in an argon atmosphere, followed by hot isostatic pressing of the milled powder at 1320 degrees C under a pressure of 200 MPa for 2 ...

Elsevier2011

Effect of helium on irradiation-induced hardening of iron: A simulation point of view

Robin Schäublin

Irradiation-induced hardening and loss of ductility of ferritic/martensitic materials envisaged for future fusion reactor is still difficult to understand. In particular, helium (He), produced by transmutation by the fusion neutrons of 14 MeV, is known to ...

2006

Stability of helium bubbles in alpha-iron: A molecular dynamics study

Robin Schäublin, Guillaume Lucas

Molecular dynamics simulations were performed to estimate the dissociation energies of helium interstitials, vacancies and self-interstitial atoms from small helium-vacancy clusters. Several sets of empirical potentials have been tested and compared with a ...

Elsevier2009

On the origin of primary 1/2 a(0) and a(0) loops in irradiated Fe(Cr) alloys

Robin Schäublin, Anna Prokhodtseva

The radiation-induced primary dislocation loops in thin foils of ultra-high purity Fe and Fe(Cr) model alloys were investigated using ion irradiation in situ in a TEM. In the '111 mechanism' the induced nanometric loops of type a(0) stem from mutual ...

Pergamon-Elsevier Science Ltd2017

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

The effect of point defects on the martensitic phase transformation

Jian Wang, Yi Wang, Robin Schäublin

Martensitic Ni-Ti was observed to transform to the austenitic phase due to defects introduced either by ion or electron irradiations at a temperature where the martensitic phase is normally stable. The phenomenon was studied by molecular dynamics simulatio ...

2006

Irradiation-induced stacking fault tetrahedra in fcc metals

Nadine Baluc, Robin Schäublin, Zhongwen Yao

Irradiation induces the formation of stacking fault tetrahedra (SFTs) in a number of fcc metals, such as stainless steel and pure copper. In order to understand the role of the material's parameters on this formation, pure Cu, Ni, Pd and Al, having a respe ...

2005