HIGH-ENTROPY ALLOY (HEA) WITH ROOM-TEMPERATURE SUPERPLASTICITY AND PREPARATION METHOD THEREOF

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United States of America Patent

APP PUB NO 20240295013A1
SERIAL NO

18424646

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The present disclosure provides a high-entropy alloy (HEA) with room-temperature superplasticity and a preparation method thereof, belonging to the field of metal materials. In the present disclosure, the HEA with room-temperature superplasticity has a chemical formula shown in Formula I: (FeCoNiCr)100-xCux (Formula I), where in Formula I, x is 2.0 to 4.0. A FeCoNiCr alloy is used as a matrix, and then added with a trace amount of a Cu element, thereby significantly reducing formation of a metastable phase in the FeCoNiCr alloy while reducing stacking fault energy of the alloy, such that the alloy maintains a desirable work hardening ability and achieves an excellent elongation at break. Moreover, a plasticity of the alloy is further improved through twinning-induced plasticity (TWIP).

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Patent Owner(s)

Patent OwnerAddress
SHAANXI UNIVERSITY OF TECHNOLOGYSCHOOL OF PHYSICS AND ELECTRONICS SHAANXI UNIVERSITY OF TECHNOLOGY NO 1 EAST 1ST RING ROAD HANTAI DISTRICT HANZHONG CITY SHAANXI PROVINCE 723001 HANZHOUNG CITY SHAANXI PROVINCE 723001

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
AI, Taotao Hanzhong, CN 5 1
CHUI, Pengfei Hanzhong, CN 2 0
JING, Ran Hanzhong, CN 5 0
LI, Jianghua Hanzhong, CN 39 53
LIAO, Zhongni Hanzhong, CN 2 0
ZHANG, Qing Hanzhong, CN 406 3556
ZHANG, Xiong Hanzhong, CN 95 1001
ZHANG, Yang Hanzhong, CN 898 4769

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