Effect of die-casting conditions on viscoelastic behavior of Mg alloy

E. M. Gutman, Ya B. Unigovski, E. Aghion, Z. Koren, A. Eliezer

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Creep and stress relaxation resistance of the most common die-cast Mg alloy AZ91D (Mg-9% Al-1% Zn) are influenced by both casting temperature and injection rate as well as by die temperature and porosity. Relationships between viscoelastic properties of Mg alloy at 150 °C and the parameters of die-casting technology are obtained and presented as simple contour plots (isograms). These properties can be improved by reducing casting temperature and increasing injection rate. When fabricating complicated thin-wall components, castability of the alloy can be diminished due to a fast temperature drop. In this case, casting temperature should be higher, whereas injection rate can be reduced. Porosity seems to be the most important characteristic of die-cast alloy microstructure affecting its viscoelastic properties. Coarse β-phase precipitates do not affect creep and relaxation characteristics of die-cast AZ91D alloy.

Original languageEnglish
Pages (from-to)297-301
Number of pages5
JournalJournal of Materials Engineering and Performance
Volume9
Issue number3
DOIs
StatePublished - 1 Jan 2000

ASJC Scopus subject areas

  • Materials Science (all)
  • Mechanics of Materials
  • Mechanical Engineering

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