Effects of Al and Zn additions on mechanical properties and precipitation behaviors of Mg-Sn alloy system

Hyeon Taek Son, Jong Beom Lee, Ha Guk Jeong, Toyohiko J. Konno

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)

Abstract

For the Mg-Sn-Al alloys, the ultimate strength (UTS) of an extruded Mg-9wt.%Al-2wt.%Sn alloy reached 390 MPa. TEM observation indicated that plate-like Mg17Al12 precipitates having Burgers orientation relationship with the matrix are responsible for the strength. This alloy also exhibits an age hardening behavior: the peak hardness appears after 15-20 h of heat treatment at 473 K. On the other hand, the UTS of the Mg-Mg-Sn-Zn alloys are on the order of 300 MPa. The precipitates in these alloys are composed of the Mg2Sn and MgZn2 particles. It was found that these phases often precipitate together, suggesting that the MgZn2 phase can act as a nucleation sites for Mg2Sn.

Original languageEnglish
Pages (from-to)1966-1969
Number of pages4
JournalMaterials Letters
Volume65
Issue number12
DOIs
Publication statusPublished - 2011 Jun 30

Keywords

  • Elastic properties
  • Intermetallic alloys and compounds
  • Metals and alloys
  • Microstructure

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Effects of Al and Zn additions on mechanical properties and precipitation behaviors of Mg-Sn alloy system'. Together they form a unique fingerprint.

Cite this