(2-x)CrMnAlxCu (x=1.3, 1.4, 1.5, 1.6, 1.7) high entropy alloy were detected and analyzed. The experimental results show that the interdendrite and dendrite structure of Fe(2-x)CrMnAlxCu high entropy alloy are composed of bcc phase, and the ordered BCC phase and FeAl phase precipitates are precipitated inside the dendrite, and the content of precipitates increases slightly with the decrease of Fe content and the increase of Al content. The hardness of Fe(2-x)CrMnAlxCu high entropy alloy keeps increasing. When x=1.6, the comprehensive performance of high entropy alloy reaches the best, with the hardness up to 558.5 HV, the yield strength 1205.43 MPa, the compressive strength 1431.52 MPa and the deformation rate 9.06%. In addition, with the decrease of Fe content and the increase of Al content, the segregation of elements in high entropy alloy is alleviated to a certain extent."/>

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Effect of Fe、Al contents on microstructure of Fe(2-x)CrMnAlxCu high entropy alloy
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Affiliation:

1.College of Material Science and Technology,Lanzhou University of Technology;2.CNNC Nuclear Power Operation and Management Co,Ltd,Zhejiang Haiyan

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Fund Project:

R&d project of China Nuclear Power Operation Management Co., LTD(QS4FY-22003224)

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    Abstract:

    In this study, Fe and Al were used as joint variables for fine tuning, and the effects of the common changes of Fe and Al on the phase structure, microstructure, compression properties, hardness and friction properties of Fe(2-x)CrMnAlxCu (x=1.3, 1.4, 1.5, 1.6, 1.7) high entropy alloy were detected and analyzed. The experimental results show that the interdendrite and dendrite structure of Fe(2-x)CrMnAlxCu high entropy alloy are composed of bcc phase, and the ordered BCC phase and FeAl phase precipitates are precipitated inside the dendrite, and the content of precipitates increases slightly with the decrease of Fe content and the increase of Al content. The hardness of Fe(2-x)CrMnAlxCu high entropy alloy keeps increasing. When x=1.6, the comprehensive performance of high entropy alloy reaches the best, with the hardness up to 558.5 HV, the yield strength 1205.43 MPa, the compressive strength 1431.52 MPa and the deformation rate 9.06%. In addition, with the decrease of Fe content and the increase of Al content, the segregation of elements in high entropy alloy is alleviated to a certain extent.

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[Ma kai, Zhang Huaqian, Zhang Wei, Feng Li, Zhao Yanchun. Effect of Fe、Al contents on microstructure of Fe(2-x)CrMnAlxCu high entropy alloy[J]. Rare Metal Materials and Engineering,2024,53(7):1970~1977.]
DOI：10.12442/j. issn.1002-185X.20230324

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History
  • Received:May 29,2023
  • Revised:June 25,2023
  • Adopted:June 28,2023
  • Online: July 22,2024
  • Published: July 12,2024