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Structure of precipitates and orientation relationships in Al, Ge, Mo-doped higher manganese silicide crystals
Related publications (42)
Evolution 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 LTD2022Strengthening mechanisms in dilute and random solid solution high-entropy BCC alloys
Tuning the mechanical properties of metals, including strength, through adjusting the type and/or concentration of added solute elements, has been recognized as an effective way to design and produce materials with desired or optimized mechanical propertie ...
EPFL2022Atomic Scale Investigations into the Origins of Ductility in Mg Alloys
The industrial applications of Mg, the lightest structural metal, and abundant in Earth's crust, are hampered by its low intrinsic ductility and low fracture toughness at room temperature which is attributed to the underlying less symmetric and plastically ...
EPFL2020Thermal activation parameters of plastic flow reveal deformation mechanisms in the CrMnFeCoNi high-entropy alloy
William Curtin, Céline Varvenne, Joël Bonneville
To reveal the operating mechanisms of plastic deformation in an FCC high-entropy alloy, the activation volumes in CrMnFeCoNi have been measured as a function of plastic strain and temperature between 77 K and 423 K using repeated load relaxation experiment ...
2018Dislocation Cross-Slip in Face-Centered Cubic Solid Solution Alloys
The mechanical strength of metals depends on their resistance against various microscopic
deformation processes. In ductile metals, the most important process is shearing of the crystal
lattice by dislocations. One of the fundamental aspects of dislocation ...
EPFL2018Strain-induced dissolution of Y-Ti-O nano-oxides in a consolidated ferritic oxide dispersion strengthened (ODS) steel
Roland Logé, Mathijs Pieter van der Meer
The present study shows the influence of severe plastic deformation on highly stable Y-Ti-O nano-oxides present in ferritic ODS alloys used for nuclear applications. An innovative strain path implying alternated compressions was used to deform the material ...
2018Competition 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 Verlag2017Softening and hardening of yield stress by hydrogen–solute interactions
William Curtin, Binglun Yin, Ali Tehranchi
Hydrogen atoms have a wide variety of effects on the mechanical performance of metals, and the underlying mechanisms associated with effects on plastic flow and embrittlement remain to be discovered or validated. Here, the reduction in the plastic flow str ...
Taylor & Francis2017Ab initio Modelling of the Early Stages of Precipitation in Al-6000 Alloys
William Curtin, Michele Ceriotti, Till Junge, Daniele Giofré
Age hardening induced by the formation of (semi)-coherent precipitate phases is crucial for the processing and final properties of the widely used Al-6000 alloys. Early stages of precipitation are particularly important from the fundamental and technologic ...
Elsevier2017Cast aluminium single crystals cross the threshold from bulk to size-dependent stochastic plasticity
Andreas Mortensen, William Curtin, Csilla Mikó, Jérôme Krebs, Suzanne Godelieve Alphonsine Verheyden, Satish I Rao
Metals are known to exhibit mechanical behaviour at the nanoscale different to bulk samples. This transition typically initiates at the micrometre scale, yet existing techniques to produce micrometre-sized samples often introduce artefacts that can influen ...
Nature Publishing Group2017