Improved bending fatigue and corrosion properties of a Mg-Al-Mn alloy by super vacuum die casting

Wei Wen, Alan A. Luo, Tongguang Zhai, Yan Jin, Yang Tse Cheng, Ilona Hoffmann

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

This paper shows significantly improved mechanical properties (∼64% higher bending fatigue strength) and corrosion resistance (39-62% lower corrosion rate) in a Mg-6Al-0.3Mn alloy (AM60B) produced by a new super vacuum die casting (SVDC) process compared with the conventional high-pressure die casting (HPDC). The SVDC samples exhibited a skin layer which contained 6-12% more eutectic phase and was ∼14% harder than those of the HPDC material, due to faster cooling rates in the SVDC process resulting from better die-metal contact.

Original languageEnglish
Pages (from-to)879-882
Number of pages4
JournalScripta Materialia
Volume67
Issue number11
DOIs
StatePublished - Dec 2012

Bibliographical note

Funding Information:
W.W. and T.Z. would like to thank General Motor Company and NSF (through a CAREER Award ( DMR-0645246 )) for financial support.

Keywords

  • Corrosion resistance
  • Fatigue
  • Mg alloy
  • SVDC
  • Skin layer

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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