+Advanced Search
Microstructure and Mechanical Properties of CrFeMnVCu High Entropy Alloys
Author:
Affiliation:

1.Beijing System Design Institute of Electro Mechanic Engineering;2.Bgrimm MTC Technology Co., Ltd

Clc Number:

Fund Project:

National High Technology Research and Development Program 863, 2012AA03A513

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    In this paper, a series of new Cr-Mn-Fe-V-Cu high-entropy alloys with high ductility were prepared by arc melting and suction casting. It was found that with the addition of Cu, the structure of the alloys evolved from BCC+BCC1 phases (CrFeMnV alloy) to BCC + FCC phases (CrFeMnxVCu0.2xalloys). Formation of the Cu-Mn-rich FCC phase was caused by immiscibility of Cu with V, Cr and Fe. With increase of Cu, the volume fraction of FCC phase increased, and the morphology of the FCC phase transformed from granular particles to long strips and blocks. The five Cr-Mn-Fe-V-Cu HEAs present a great balance between strength and ductility. The CrFeMn0.3VCu0.06 alloy with granular FCC particles exhibits highest compressive yield strength (1273 MPa) and excellent ductility (εf = 50.7%). The dislocation and precipitate strengthening are responsible for high strength of the CrFeMn0.3VCu0.06 alloy. Therefore, the dislocation density and distribution of FCC phase are the crucial factors influencing both microstructures and mechanical properties of the HEAs.

    Reference
    Related
    Cited by
Get Citation

[song ruokang, Zhang Lin. Microstructure and Mechanical Properties of CrFeMnVCu High Entropy Alloys[J]. Rare Metal Materials and Engineering,2021,50(10):3707~3713.]
DOI:10.12442/j. issn.1002-185X.20200817

Copy
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:October 22,2020
  • Revised:November 25,2020
  • Adopted:December 23,2020
  • Online: October 28,2021
  • Published: October 25,2021