Microstructure and martensitic transformation in Ni25Ti25Hf25Cu25 medium entropy shape memory alloy

Q. Z. Li, H. Y. Wang,A. V. Shuitcev, B. H. Wang,L. Li,Y. X. Tong

INTERMETALLICS（2024）

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摘要

Ni25Ti25Hf25Cu25 medium entropy shape memory alloy (MESMA) exhibit reversible B2 <-> B19 ' martensitic transformation. Martensitic morphology is represented by (011) type I twins with low density of inner (001) compound twins. In a bending test, Ni25Ti25Hf25Cu25 exhibits reversible strain of 2.4% under stress of 300 MPa.

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关键词

Shape -memory alloys,Martensitic transformation,Shape -memory effects,Martensitic structure,High -entropy alloys

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