Aging Characteristics and High Temperature Tensile Properties of Mg-Gd-Y-Zr Alloys

• Anyanwu Ifeanyi Anthony

  Department of Mechanical Engineering, Nagaoka University of Technology

• Kamado Shigeharu

  Department of Mechanical Engineering, Nagaoka University of Technology

• Kojima Yo

  Department of Mechanical Engineering, Nagaoka University of Technology

抄録

The individual contributions of Gadolinium and Yttrium to age hardening and high temperature strength of magnesium alloys containing both elements are investigated using alloys containing different Gd:Y mole ratios of 1:0, 3:1, 1:1, 1:3 and 0:1 with a constant Y+Gd content of 2.75 mol%. All investigated alloys exhibit remarkable age hardening by precipitation of β^′′ phase with DO₁₉ crystal structure and β^′ phase with bco crystal structure even at aging temperatures higher than 200°C. Both precipitates are observed in peak-aged specimens. The precipitates contributing to age hardening are fine and their amount increases as Gd content increases, and this results in increased peak hardness, tensile strength and 0.2% proof stress but decreased elongation. On the other hand, higher Y content increases the elongation of the alloys but results in decreased strength.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 42 (7), 1206-1211, 2001

  公益社団法人 日本金属学会

キーワード

• heat resistant magnesium alloys
• age hardening
• metastable phases
• high temperature tensile properties

詳細情報

• CRID: 1390282679222086656
• NII論文ID: 10006550517
• NII論文ID: 130004451554
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.42.1206
• COI: 1:CAS:528:DC%2BD3MXmsFyrsrc%3D
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 5888904
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5888904
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/42/7/42_7_1206/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可