A novel face-centered-cubic high-entropy alloy strengthened by nanoscale precipitates

Gang Qin, Ruirun Chen*, Peter K. Liaw, Yanfei Gao, Xiaoqing Li, Huiting Zheng, Liang Wang, Yanqing Su, Jingjie Guo, Hengzhi Fu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

75 Citations (Scopus)

Abstract

A new single-phase face-centered-cubic (FCC) Co9Cr7Cu36Mn25Ni23 [atomic percent, similar hereinafter] high-entropy alloy (HEA) was prepared by arc melting. A uniform distribution of nanometer-sized precipitates was achieved. The tensile yield strength, ultimate tensile strength, and elongation were 401 MPa, 700 MPa, and 36%, respectively. The energy-dispersive spectrometer results showed that the nano-precipitates were rich in Co and Cr elements. Moreover, the crystal-forming behavior and the nanoscale-precipitates-forming mechanism were revealed.

Original languageEnglish
Pages (from-to)51-55
Number of pages5
JournalScripta Materialia
Volume172
DOIs
Publication statusPublished - Nov 2019
Externally publishedYes

Keywords

  • High-entropy alloys
  • Mechanical properties
  • Nanoscale

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