Tensile Properties of Mg-8Al-xRE Alloys from 300 K to 673 K

• Yang Wan-Gye

  Department of Materials Science and Engineering, National Taiwan University

• Koo Chun-Hao

  Department of Materials Science and Engineering, National Taiwan University

抄録

This paper presents the tensile properties of cast and extruded Mg–8Al–xRE (in mass%; x is 0, 1, 2 or 3%) alloys from 300 to 673 K obtained at a strain rate of 8.3×10⁻⁴ s⁻¹. Mg–8Al–xRE alloys were prepared by melting and casting in a vacuum induction furnace, and extruded at 633 K with a reduction ratio of 90:1. RE greatly improves the tensile strength of cast and extruded Mg8Al alloys above 473 K. RE negatively affects the elongation of cast alloys at the studied temperature range but considerably enhances that of extruded alloys. Superplasticity of the extruded alloys is observed at 473 K or above. The strengthening mechanisms and the optimal deformation temperature, T_c, of these alloys are discussed in detail.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 44 (5), 1029-1035, 2003

  公益社団法人 日本金属学会

キーワード

• magnesium alloys
• rare-earth element
• extrusion
• mechanical properties
• tensile tests
• strengthening mechanisms

詳細情報

• CRID: 1390001204245879808
• NII論文ID: 130004452131
• NII論文ID: 10011912123
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.44.1029
• COI: 1:CAS:528:DC%2BD3sXlsVSjt7k%3D
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 6537445
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6537445
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/44/5/44_5_1029/_pdf
• 本文言語コード: en
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可