Low temperature superplasticity of ECAP processed Mg–10Li–1Zn alloy

• Yoshida Yu

• Cisar Lawrence

• Kamado Shigeharu

• Kojima Yo

書誌事項

タイトル別名

• Low Temperature Superplasticity of ECAE Processed Mg-10%Li-1%Zn Alloy
• Low Temperature Superplasticity of ECAE Processed Mg 10パーセント Li 1パーセント Zn Alloy

抄録

In order to achieve low temperature superplasticity at relatively high strain rate in magnesium alloys, Mg–10 mass%Li–1 mass%Zn (LZ101) α+β two phase alloy was subjected to ECAE (Equal Channel Angular Extrusion) processing and tensile tests of the obtained specimens of the alloy were carried out to investigate the superplastic properties. In a specimen of the LZ101 alloy, which has improved microstructure through repetitive ECAE processing at 323 K, superplasticity occurs at 423 K, which is below T_m⁄2 (T_m: melting point of the alloy), under a relatively high strain rate of 1×10⁻³ s⁻¹ with fracture elongation of 391%. Such a specimen after tensile test contains fine grains due to dynamic recrystallization and the precipitation of β phase along the grain boundaries and at triple points in recrystallized α phase. This microstructural change enhances grain boundary sliding, resulting in the occurrence of low temperature superplasticity at relatively high strain rate.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 43 (10), 2419-2423, 2002

  公益社団法人 日本金属学会

キーワード

• equal channel angular extrusion
• magnesium-lithium alloy
• grain boundary sliding
• superplasticity
• dynamic recrystallization
• strain rate dependence

詳細情報

• CRID: 1390001204248530944
• NII論文ID: 130004451663
• NII論文ID: 30018850290
• NII論文ID: 10012326787
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.43.2419
• COI: 1:CAS:528:DC%2BD38XptVylu7w%3D
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 6339377
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6339377
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/43/10/43_10_2419/_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