High-entropy Alloys

1. Lattice-distortion-induced strong medium-entropy alloys

2. Twinning-induced ductile high-entropy alloys

3. Precipitation-hardened high-entropy alloys

High-entropy alloys (HEAs) are alloys that are formed by mixing equal or relatively large proportions of (usually) five or more elements (From Wikipedia).

We design three types of high- or medium-entropy alloys;

1) VCoNi-based medium-entropy alloys enabled by the severe lattice distortion effect

2) VCrMnFeCoNi-based high-entropy alloys triggering the deformation twinning

3) 3 to 6 components medium to high-entropy alloys consisting of precipitates with BCC or FCC matrix.

These three strategies are aiming to develop ultra high-strength alloys for load- carrying applications at room temperature.

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*Key Publications

Advanced Materials (2019)                   https://doi.org/10.1002/adma.201807142

Nature Communications (2017)            https://doi.org/10.1038/ncomms15719

J. Alloys Compd. (2019)                        https://doi.org/10.1016/j.jallcom.2019.01.293

npj Computational Materials (2018)      https://doi.org/10.1038/s41524-017-0060-9

Mater. Sci. Eng. A (2018)                      https://doi.org/10.1016/j.msea.2018.11.136
Mater. Sci. Eng. A (2018)                      https://doi.org/10.1016/j.msea.2018.03.115