Publication
Experimental and numerical study of microstructure formation and the origin of crystallographic misorientation in Al-Zn-Si alloy coatings
Publications associées (109)
Strain glass transition of cobalt phase in a cemented carbide
Cemented carbides are hard materials used for the fabrication of cutting tools. They consist of hard micron or sub-micron carbide grains held together in a matrix of a tough metallic binder such as cobalt. The understanding and control of cobalt characteri ...
ELSEVIER SCI LTD2020The thermally activated distortion with amplification effect and related variant selection in red gold alloys
Roland Logé, Cyril Cayron, Margaux Nathalie Dominique Larcher
Variant selection during the A1→L10 transformation in a polycrystalline red gold alloy close to equiatomic Au-Cu composition has been extensively studied by Electron Backscatter Diffraction (EBSD) in our previous work. The use of a mathematical description ...
2020Deformation-induced martensitic transformation under multiaxial loading
The deformation-induced martensitic transformation observed in specific materials can enhance their mechanical properties or result in functional properties. For example, the transformation induced plasticity (TRIP) effect results in a good combination of ...
EPFL2019Combining experiments and modeling to explore the solid solution strengthening of high and medium entropy alloys
William Curtin, Céline Varvenne
The mechanical properties due to solid solution strengthening are explored within the single phase face-centered cubic (fcc) domain of the Co-Cr-Fe-Mn Ni high entropy alloy (HEA) system. This is achieved by combining an efficient and reproducible metallurg ...
2019In Situ Deformation Studies of HCP Metal Alloys with Neutron Diffraction, X-Ray Diffraction, and High Resolution Digital Image Correlation
Mg and Ti alloys are attractive materials for structural applications in the transportation and biomedical industries due to their high strength-to-weight ratios. However, due to their hexagonally close-packed (HCP) lattice structure, they exhibit poor for ...
EPFL2019Following Microstructures during Deformation: In situ X-ray/Neutron Diffraction and HRDIC
Helena Van Swygenhoven, Efthymios Polatidis
The mechanical behavior of three engineering materials is studied employing in situ deformation methods. The study covers metastable austenitic steels with different stacking fault energies during multiaxial loading, a Ti-6Al-4V alloy processed by electron ...
IOP PUBLISHING LTD2019Enhanced precipitate growth at reduced temperatures during chemical ordering in deformed red gold alloys
Helena Van Swygenhoven, Steven Van Petegem, Nadine Baluc, Marina Garcia Gonzalez, Samy Hocine
Manufacturing of red gold components relies widely on controlling the formation of ordered precipitates during thermo-mechanical processing. The ordered phase hardens the material, makes it less workable and introduces residual stresses. We show that an in ...
PERGAMON-ELSEVIER SCIENCE LTD2019Thermal Activation, Intermittency and Size Effects in the Plastic Deformation of Cast Aluminium Microwires
Suzanne Godelieve Alphonsine Verheyden
The microcasting process is a scaled-down investment casting process in which molten metal is pressure-infiltrated and directionally solidified in water-soluble moulds. It was previously developed to produce metallic microwires with a diameter (D) between ...
EPFL2018Connecting the Simpler Structures to Topologically Close-Packed Phases
Pathways connecting dissimilar crystal structures are fundamental to our understanding of structural phase transitions. In this Letter, we report on a new pathway connecting the hexagonal close-packed crystal structure to a hierarchy of topologically close ...
APS2018Competition between intragranular and intergranular deformation mechanisms in ODS ferritic steels during hot deformation at high strain rate
Oxide Dispersed Strengthened (ODS) ferritic stainless steels present well-known fine grains microstructures where dislocation movement is hindered by a dense precipitation of nano-oxides particles. Previous research, on the thermomechanical behavior at hig ...
Springer Verlag2017