Microstructure and mechanical properties of Mg-Zn-Ag alloys

Soon Chan Park, Jong Dae Lim, Dan Eliezer, Kwang Seon Shin

Research output: Contribution to journalConference articlepeer-review

44 Scopus citations

Abstract

The majority of Mg components currently in use in the automotive and electronic industries are produced by conventional casting processes. However, there is a strong need to develop new high strength wrought alloys for wide-spread application of Mg alloys in near future. In the present study, new Mg-Zn-Ag alloys were developed and characterized. In order to evaluate the effects of Ag addition on the mechanical properties of the extruded Mg-Zn alloys, the age hardening response and mechanical properties were examined with different amounts of alloying element. The microstructures of the specimens were examined with optical microscopy and transmission electron microscopy. The grain sizes of the alloys in as-extruded condition were markedly reduced with the addition of Ag. The hardness was found to increase more rapidly in the alloys with double aging treatment compared to those with single aging treatment. The peak hardness was also found to be higher in the alloys with double aging treatment. In all heat treatment conditions, the hardnesses of the Mg-Zn-Ag alloys were found to be higher than those of the Mg-Zn alloys. The addition of Ag to the Mg-Zn alloys increased the tensile strength with a small decrease in tensile elongation in the peak double aging condition.

Original languageEnglish
Pages (from-to)159-164
Number of pages6
JournalMaterials Science Forum
Volume419-422
Issue numberI
DOIs
StatePublished - 1 Jan 2003
EventProceedings of the Second Osaka International Conference on Platform Science and Technology for Advanced Magnesium Alloys 2003 - Osaka, Japan
Duration: 26 Jan 200330 Jan 2003

Keywords

  • Extrusion
  • Heat treatment
  • Mechanical property
  • Mg-Zn-Ag alloy
  • Microstructure

ASJC Scopus subject areas

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

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