Development of high strength Mg alloys by MA-HDH P/M process

Mitsuhiro Matsuda, Shintaro Yoshimoto, Yoshihito Kawamura, Kazuhiro Ishikawa, Minoru Nishida

Research output: Contribution to journalConference article

Abstract

MA-HDH P/M process for the production of Mg bulk alloy has been established by using MgH2 powders as the starting material. The as-extruded Mg95Zn2.5Zr2.5 bulk alloy of MAed powders showed high compressive yield strength of 613 MPa, which was originated from the refinement of hcp-Mg grains, the solid solution hardening of Zn and Zr, and the precipitation hardening by MgO fine particles. The compressive yield strength of the MA-HDH P/M Mg95Zn2.5Zr2.5 alloy annealed at 823K for 10.8 ks was as high as that of the as-extruded Mg95Zn2.5Zr2.5 bulk alloy. This seems to be due to the suppression of the hcp-Mg grain growth by the densely dispersed MgO fine particles.

Original languageEnglish
Pages (from-to)739-744
Number of pages6
JournalMaterials Science Forum
Volume419-422
Issue numberII
DOIs
Publication statusPublished - Jan 1 2003
Externally publishedYes
EventProceedings of the Second Osaka International Conference on Platform Science and Technology for Advanced Magnesium Alloys 2003 - Osaka, Japan
Duration: Jan 26 2003Jan 30 2003

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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