Plastic Deformation Behavior of 40Fe–25Ni–15Cr–10Co–10V High-Entropy Alloy for Cryogenic Applications

A single FCC phase 40Fe–25Ni–15Cr–10Co–10V high-entropy alloy was designed, fabricated, and evaluated for potential cryogenic applications. The alloy forms a single FCC phase and exhibits higher yield strength, tensile strength, and elongation at cryogenic temperature (77 K) than at room temperature...

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Bibliographic Details
Published in:Metals and materials international 2019, 25(2), , pp.277-284
Main Authors: Jang, Min Ji, Kwak, Hyunjeong, Lee, Ye Won, Jeong, Youjin, Choi, Jahong, Jo, Yong Hee, Choi, Won-Mi, Sung, Hyun Je, Yoon, Eun Yoo, Praveen, S., Lee, Sunghak, Lee, Byeong-Joo, Abd El Aal, Mohamed Ibrahim, Kim, Hyoung Seop
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Constitutive models
Cryoforming
Cryogenic temperature
Deformation
Deformation mechanisms
Elongation
Engineering Thermodynamics
Finite element method
Heat and Mass Transfer
High entropy alloys
Machines
Magnetic Materials
Magnetism
Manufacturing
Materials Science
Mathematical analysis
Metallic Materials
Plastic deformation
Processes
Solid Mechanics
Tensile properties
Tensile strength
Tensile tests
Twinning
재료공학
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Summary:A single FCC phase 40Fe–25Ni–15Cr–10Co–10V high-entropy alloy was designed, fabricated, and evaluated for potential cryogenic applications. The alloy forms a single FCC phase and exhibits higher yield strength, tensile strength, and elongation at cryogenic temperature (77 K) than at room temperature (298 K). The superior tensile properties at cryogenic temperature are discussed based on the formation of deformation twins during the tensile test at cryogenic temperature. In addition, a constitutive model reflecting the cryogenic deformation mechanism (i.e., twinning-induced plasticity) was implemented into the finite element method to analyze this behavior. Experimental results and the finite element analysis suggest that the increase in plastic deformation capacity at cryogenic temperature contributes to the formation of deformation twins.
ISSN:1598-9623
2005-4149
DOI:10.1007/s12540-018-0184-6