Hardening and microstructural reactions in high-temperature equal-channel angular pressed Mg-Nd-Gd-Zn-Zr alloy

G. Sha*, J. H. Li, W. Xu, K. Xia, W. Q. Jie, S. P. Ringer

*Corresponding author for this work

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The use of high-temperature (330°C) equal-channel angular pressing (ECAP) is demonstrated to promote precipitation of a fine and uniform dispersion of the FCC β1 phase in an Mg-Nd-Gd-Zn-Zr alloy. Significantly, this process induces a hardening reaction in the alloy, where isothermal ageing at this temperature leads only to softening. The evolution of microstructure is characterized using transmission electron microscopy and scanning electron microscopy. The nucleation and growth of precipitates during the high-temperature ECAP are discussed. This research highlights a new approach to engineer precipitate microstructures via the application of severe plastic deformation so as to extend the property space of high-temperature Mg alloys.

Original languageEnglish
Pages (from-to)5092-5099
Number of pages8
JournalMaterials Science and Engineering A
Volume527
Issue number20
DOIs
Publication statusPublished - Jul 2010
Externally publishedYes

Keywords

  • Equal-channel angular pressing
  • Mg alloy
  • Nucleation and growth
  • Precipitation
  • Strengthening

Fingerprint Dive into the research topics of 'Hardening and microstructural reactions in high-temperature equal-channel angular pressed Mg-Nd-Gd-Zn-Zr alloy'. Together they form a unique fingerprint.

Cite this