Friction stir welding of a CoCrFeNiAl0.3 high entropy alloy

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

15 Scopus Citations
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Author(s)

  • Z. G. Zhu
  • Y. F. Sun
  • M. H. Goh
  • F. L. Ng
  • Q. B. Nguyen
  • H. Fujii
  • S. M.L. Nai
  • J. Wei

Detail(s)

Original languageEnglish
Pages (from-to)142-144
Journal / PublicationMaterials Letters
Volume205
Publication statusPublished - 15 Oct 2017

Abstract

A typical face-centered cubic CoCrFeNiAl0.3 high entropy alloy was welded by friction stir welding. Sound joints without welding defects were obtained. Four typical regions, the stir zone, thermomechanically affected zone, heat affected zone and base metal could be detected. The stir zone showed a refined equiaxed microstructure due to recrystallization and it exhibited the highest hardness with grain refine- ment. The grain size decreased slightly with increasing the welding speed. The thermomechanically affected zone exhibited a mixed microstructure comprising coarse and fine grains due to partial recryatl- lization. The present result shows a potential capability for joining high entropy alloys through friction stir welding and may enhance their engineering applications.

Research Area(s)

  • Friction stir welding, Hardness, High entropy alloys, Microstructure

Citation Format(s)

Friction stir welding of a CoCrFeNiAl0.3 high entropy alloy. / Zhu, Z. G.; Sun, Y. F.; Goh, M. H.; Ng, F. L.; Nguyen, Q. B.; Fujii, H.; Nai, S. M.L.; Wei, J.; Shek, C. H.

In: Materials Letters, Vol. 205, 15.10.2017, p. 142-144.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review