Strengthening the CoCrFeNiNb0.25 high entropy alloy by FCC precipitate

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Feng He
  • Sizhe Niu
  • Qingfeng Wu
  • Junjie Li
  • Jincheng Wang
  • Yingying Dang

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)53-57
Journal / PublicationJournal of Alloys and Compounds
Volume667
Publication statusPublished - 15 May 2016

Abstract

High entropy alloys (HEAs) are facing difficulties in balancing strength and ductility, and till now there is no satisfactory solution. In this paper, the CoCrFeNiNb0.25 HEA with good ductility was strengthened by a face centered cubic (FCC) precipitate after annealing heat treatment. When the CoCrFeNiNb0.25 HEA was annealed at 750°C, a lath-shaped FCC precipitates with nano basket-weave microstructures appeared and distributed randomly in the proeutectic FCC phase. Due to the precipitation strengthening, the yield stress of the CoCrFeNiNb0.25 HEA almost doubled but its ductility was just slightly damaged.

Research Area(s)

  • High entropy alloys, Precipitation, Strengthening

Citation Format(s)

Strengthening the CoCrFeNiNb0.25 high entropy alloy by FCC precipitate. / He, Feng; Wang, Zhijun; Niu, Sizhe; Wu, Qingfeng; Li, Junjie; Wang, Jincheng; Liu, C. T.; Dang, Yingying.

In: Journal of Alloys and Compounds, Vol. 667, 15.05.2016, p. 53-57.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal