A novel stress-induced martensitic transformation in a single-phase refractory high-entropy alloy

Liang Wang, Tangqing Cao, Xudong Liu, Benpeng Wang, Ke Jin, Yaojian Liang, Lu Wang, Fuchi Wang, Yang Ren, Jun Liang, Yunfei Xue*

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

28 引用 (Scopus)

摘要

High-entropy alloys (HEAs) provide a new perspective to design metastable alloys with the stress-induced martensitic transformation (SIMT) for overcoming the strength-ductility trade-off. Here, we report a novel SIMT, orthorhombic to hexagonal close-packed martensite, in a single orthorhombic refractory HEA (Ti16Zr35Hf35Ta14 RHEA), showing a good yield strength-ductility matching. The analysis of the elastic distortion energy (∆Eels) of Ti16Zr35Hf35Ta14 and several other RHEAs reveals that severe lattice distortion is a key factor which causes this SIMT. Combined the “d-electron alloy design” approach with the ∆Eels, the phase configuration and SIMT path in RHEAs can be well predicted. Our work brings new insights between the lattice distortion and SIMT of RHEAs, benefiting the metastable alloy development.

源语言英语
页(从-至)129-134
页数6
期刊Scripta Materialia
189
DOI
出版状态已出版 - 12月 2020

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Wang, L., Cao, T., Liu, X., Wang, B., Jin, K., Liang, Y., Wang, L., Wang, F., Ren, Y., Liang, J., & Xue, Y. (2020). A novel stress-induced martensitic transformation in a single-phase refractory high-entropy alloy. Scripta Materialia, 189, 129-134. https://doi.org/10.1016/j.scriptamat.2020.08.013