Evolution of Mechanical Properties and Microstructure in Extruded Mg<SUB>96</SUB>Zn<SUB>2</SUB>Y<SUB>2</SUB> Alloys by Annealing

• Noda Masafumi

  Kumamoto Technology and Industry Foundation

• Mayama Tsuyoshi

  Department of Materials Science, Kumamoto University

• Kawamura Yoshihito

  Department of Materials Science, Kumamoto University

Bibliographic Information

Other Title

• Evolution of mechanical properties and microstructure in extruded Mg96Zn2Y2 alloys by annealing

Abstract

Mg₉₆Zn₂Y₂ alloy with a long period stacking ordered (LPSO) phase was produced by extrusion, and the effects of annealing on its microstructure and mechanical properties were investigated. Annealing at temperatures up to 623 K improved the elongation of the alloy from 5.4 to 9.6% but caused no changes in yield stress and tensile strength, respectively, because the LPSO phase prevented grain growth, the α-Mg phase maintained a fine grain size, kink deformation remained in the LPSO phase, and the Mg₃Zn₃Y₂ phases finely dispersed. When the alloy was annealed at 773 K, the α-Mg and Mg₃Zn₃Y₂ phases became coarse, which reduced the yield stress and tensile strength, respectively, while the elongation improved to 23%.

Journal

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 50 (11), 2526-2531, 2009

  The Japan Institute of Metals and Materials

Keywords

• magnesium-zinc-yttrium alloy
• annealing
• mechanical properties
• microstructure
• long period stacking order phase
• kink deformation

Details

• CRID: 1390282679226127616
• NII Article ID: 10025558833
• NII Article ID: 130004454136
• NII Book ID: AA1151294X
• DOI: 10.2320/matertrans.m2009214
• COI: 1:CAS:528:DC%2BC3cXntlOh
• ISSN: 13475320
• ISSN: 13459678
• NDL BIB ID: 10417407
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10417407
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/50/11/50_M2009214/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed