Complex precipitates with long periodic stacking (LPS) phase and precipitation behaviors in the Mg97Zn1Y 1.5Nd0.5 alloy by age-annealing

J. B. Lee, Kazuhisa Sato, Toyohiko Konno, K. Hiraga

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We report the first microscopic observation of complex precipitates coexisting with LPS phases in Mg97Zn1Y 1.5Nd0.5 (at %) alloy formed by aging at 473 K, and their effects on mechanical properties. It was found that the β' [space group Cmc21 , a = 0.68 nm], β1[space group Fm3m, a = 0.77 nm] phases and GP zones in α-Mg matrix are responsible for the peak hardness; which appeared after 30 h of annealing at 473 K, while large β1 precipitates and GP zones appeared in an over-aged specimen. With the increase of the annealing temperature from 473 K to 523 K, stacking faults, together with GP zones appeared. It is proposed that the precipitates and GP-zones contribute simultaneously to the age-hardening process, and that GP zones are more stable at 473 K than 523 K.

Original languageEnglish
Pages (from-to)1096-1101
Number of pages6
JournalIntermetallics
Volume19
Issue number8
DOIs
Publication statusPublished - 2011 Aug 1

Keywords

  • B. Age-hardening
  • B. Precipitates
  • F. Electron microscopy, transmission

ASJC Scopus subject areas

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Complex precipitates with long periodic stacking (LPS) phase and precipitation behaviors in the Mg<sub>97</sub>Zn<sub>1</sub>Y <sub>1.5</sub>Nd<sub>0.5</sub> alloy by age-annealing'. Together they form a unique fingerprint.

  • Cite this