Publication
Competition between intragranular and intergranular deformation mechanisms in ODS ferritic steels during hot deformation at high strain rate
Publications associées (238)
Simple shear extrusion versus equal channel angular pressing: A comparative study on the microstructure and mechanical properties of an Mg alloy
Roland Logé, Cyril Cayron, Aryan Rezaei Rad
Two severe plastic deformation (SPD) techniques of simple shear extrusion (SSE) and equal channel angular pressing (ECAP) were employed to process an extruded Mg -6Gd -3Y -1.5Ag (wt%) alloy at 553 K for 1, 2, 4 and 6 passes. The microstructural evolutions ...
KEAI PUBLISHING LTD2023Vacancy segregation and intrinsic coordination defects at (111) twist grain boundaries in diamond
Carolina Baruffi, Christian Brandl
High radiation damage resistance has become increasingly important for applications of functional materials in harsh environments. The high radiation damage resistance diamond cubic carbon is a unique material which is considered for radiation environments ...
Oxford2023Microstructure et usinabilité d'alliages de titane béta-métastable
Titanium has become in recent years an interesting material in many applications that require a combination of high mechanical properties and low density. It has the peculiarity of undergoing an allotropic transformation at 882°C. Below this temperature, ...
EPFL2023EBSD study of variant reorientation, texture, and twin formation in a martensitic NiTi alloy deformed in compression
Roland Logé, Cyril Cayron, Mathijs Pieter van der Meer, Junfeng Xiao
Martensitic crystallography plays a vital role in the texture evolution and mechanical properties in Nickel-Titanium (NiTi) shape memory alloys when subjected to deformation. However, their microstructural changes during deformation are not well known and ...
Oxford2023Tensile and creep-rupture response of additively manufactured nickel-based superalloy CM247LC
Christian Leinenbach, Rafal Wróbel
Tensile and creep rupture properties of crack-free CM247LC alloy, processed via laser powder bed fusion, have been characterised in this work at temperatures up to 1000 & DEG;C. The subject alloy matches or even exceeds the tensile performance of its direc ...
ELSEVIER2023Origin of the enhanced pseudo-elasticity of additively manufactured Fe-17Mn-5Si-4Ni-10Cr-(V, C) shape memory alloy fabricated by laser powder bed fusion
Christian Leinenbach, Irene Ferretto
This study investigated the origin of the enhanced pseudo-elasticity of additively manufactured vanadium carbide-containing Fe-based shape memory alloys. The aged samples with two different starting microstructures, as-built and solution-treated, showed co ...
Lausanne2023Laser powder bed fusion of Fe-based shape memory alloys for novel structural metamaterials and "smart" structures
Laser powder bed fusion (LPBF) is a powder-based additive manufacturing (AM) technique, which shows great potential in the production of complex-shaped parts with unprecedented design freedom. In addition, it allows for an active manipulation of the micros ...
EPFL2023Deformation twinning mechanism in magnesium at the microscale: strain rate, temperature and orientation effects
The project aims to validate some recent theoretical developments on the deformation twinning nucleation mechanism in HCP metals through small-scale mechanic experiments. To this end, a systematic investigation of the mechanical response of pure magnesium ...
EPFL2022Evolution of deformation twinning mechanisms in magnesium from low to high strain rates
Roland Logé, Cyril Cayron, Johann Michler, Xavier Maeder, Amit Sharma, Nicolò Maria Della Ventura, Manish Jain
We present a systematic investigation of {10 (1) over bar2} extension twinning mechanism in single crystal magnesium micropillars deformed over seven orders of magnitude of strain rate, from 10(-4) to 500 s(-1), revealing how the accommodation of newly for ...
ELSEVIER SCI LTD2022Tailored deformation behavior of 304L stainless steel through control of the crystallographic texture with laser-powder bed fusion
Roland Logé, Christian Leinenbach, Efthymios Polatidis, Markus Strobl
Laser-powder bed fusion (L-PBF) has gained significant research interest, not only for its profound advantage of producing near-net shape complex geometries of metallic parts, but also for the possibility of producing tailored microstructures. Here we expl ...
ELSEVIER SCI LTD2022