Unexpected high-temperature brittleness of a Mg-Gd-Y-Ag alloy

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

13 Scopus Citations
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Author(s)

  • Lirong Xiao
  • Xuefei Chen
  • Huiyan Ning
  • Ping Jiang
  • Yi Liu
  • Bin Chen
  • Dongdi Yin
  • Hao Zhou

Detail(s)

Original languageEnglish
Pages (from-to)2510-2515
Journal / PublicationJournal of Magnesium and Alloys
Volume10
Issue number9
Online published29 Jul 2021
Publication statusPublished - Sept 2022

Link(s)

Abstract

Rare earth (RE) can produce excellent precipitation hardening in Mg alloys. However, when forming a solid solution, it also deteriorates formability, a problem that can usually be overcome by raising deformation temperature. Here we report an unexpected observation of high temperature brittleness in a Mg-Gd-Y-Ag alloy. As the temperature reached 500 °C, the formability decreased drastically, leading to severe intergranular fracture under only 0.5% strain. This was caused by failure of grain boundaries, which are weakened by segregated interfacial compounds.

Research Area(s)

  • Formability, Grain boundary sliding, High temperature brittleness, Interfacial compounds

Citation Format(s)

Unexpected high-temperature brittleness of a Mg-Gd-Y-Ag alloy. / Xiao, Lirong; Chen, Xuefei; Ning, Huiyan et al.
In: Journal of Magnesium and Alloys, Vol. 10, No. 9, 09.2022, p. 2510-2515.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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