材料科学技术(英文版)2021，Vol.86Issue(27) ：117-126.

Optimizing mechanical and magnetic properties of AlCoCrFeNi high-entropy alloy via FCC to BCC phase transformation

Chendong Zhao Jinshan Li Yudong Liu Xiao Ma Yujie Jin William Yi Wang Hongchao Kou Jun Wang
材料科学技术(英文版)2021，Vol.86Issue(27) ：117-126.
✕
  • NETL
  • NSTL
  • 维普
  • 万方数据

Optimizing mechanical and magnetic properties of AlCoCrFeNi high-entropy alloy via FCC to BCC phase transformation

Chendong Zhao 1Jinshan Li 1Yudong Liu 1Xiao Ma 2Yujie Jin 2William Yi Wang 1Hongchao Kou 1Jun Wang3
扫码查看

作者信息

  • 1. State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi'an,710072,PR China
  • 2. School of Materials Science and Engineering,Northwestern Polytechnical University,Xi'an,710072,PR China
  • 3. State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi'an,710072,PR China;Innovation Center,NPU Chongqing,401135,Chongqing,PR China
  • 折叠

Abstract

FCC,BCC and B2 phases,the most common phases in high-entropy alloys(HEAs),are widely investigated to tailor their mechanical and magnetic performances.The detailed investigation of FCC to BCC/B2 phase transformation of AlCoCrFeNi HEA in this paper reveals its evolution and structure-properties relations in terms of both temperature and holding duration.With increasing heat treatment temperature and duration,such transition will progress simultaneously at both the dendric core(DC)region and inter-dendric(ID)region and the volume of phase transformation from FCC to BCC phases is greater than FCC to B2 phases,resulting in increased yield strength and saturation magnetization.The obvious phase transition of the AlCoCrFeNi HEA at 1200℃can enhance its yield strength and saturation magnetization as a sacrifice of its fracture strain.However,an excellent combination of mechanical-magnetic properties was achieved when heat-treated at 1100℃for 50 h by optimizing both the transformation and the size of B2 phases.Our present study could pave ways to design the HEAs or other alloys with an optimum combination of mechanical and magnetic properties for application-oriented viewpoints.

Key words

High-entropy alloy/Phase transformation/Mechanical property/Magnetic property

引用本文复制引用

基金项目

This research was supported by the Natural Science Foun-dation of China(51774240)

This research was supported by the Natural Science Foun-dation of China(51690163)

fund of the State Key Laboratory of Solidification Processing in NWPU(2019-TS-04)

Innovation Capability Support Program of Shaanxi(2020KJXX-073)

Natural Science Foundation of Chongqing(cstc2020jcyj-msxmX0976)

National Training Program of Innovation and Entrepreneurship for Undergraduates(Grant S202010699160)

and the Fundamental Research Funds for the Cen-tral Universities.C.Z thanks Dr.Jiaxue You from SNNU and Dr.Haobo Li from NUS for()

出版年

2021
材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI
影响因子：0.657
ISSN：1005-0302
被引量1
参考文献量47
段落导航相关论文