Hydrogen Embrittlement

Hydrogen embrittlement in high-entropy alloys and steels

We investigate the hydrogen behaviors in high-entropy alloys or various automotive steels to reveal the embrittlement mechanism.

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We introduce the hydrogen into the materials by high-pressure gas charging or electro-chemical charging. The embrittlement is evaluated by tensile tests or immersion test after deep drawing / bending. Then, we investigate the effect of stress/strain levels, residual stress/strain field, hydrogen solubility, hydrogen diffusivity, and microstructures on the hydrogen embrittlement.

*Key Publications

Nature Communications (2020)        

Acta Mater. (2020)

Mater. Sci. Eng. A (2020)                  https://doi.org/10.1016/j.msea.2020.139656

Mater. Sci. Eng. A (2020)                  https://doi.org/10.1016/j.msea.2020.139763

Metall. Mater. Trans. A (2015)