Microstructures and mechanical properties of Mg96Zn2Y2 alloy prepared by extrusion of machined chips
-
- Fudetani Syuichi
- Division of Artificial System Science, Department of Mechanical Engineering, Chiba University
-
- Itoi Takaomi
- Division of Artificial System Science, Department of Mechanical Engineering, Chiba University
-
- Kubo Tetsuo
- Division of Artificial System Science, Department of Mechanical Engineering, Chiba University
-
- Kawamura Yoshihito
- Department of and Materials Science and Engineering, Kumamoto University
-
- Hirohashi Mitsuji
- Division of Artificial System Science, Department of Mechanical Engineering, Chiba University
書誌事項
- タイトル別名
-
- Microstructures and Mechanical Properties of Mg<SUB>96</SUB>Zn<SUB>2</SUB>Y<SUB>2</SUB> Alloy Prepared by Extrusion of Machined Chips
この論文をさがす
抄録
Hot extrusion of machined chips of Mg96Zn2Y2 (at%) alloy was carried out at 623 K, and microstructures and mechanical properties of the extruded Mg96Zn2Y2 alloy were investigated. The alloy consisted of α-Mg, Mg12ZnY, and Mg3Zn3Y2 phases, and the Mg grains had a mean grain size of 450 nm. The Mg12ZnY phase was frequently observed inside the fine Mg grains. In addition, oxidation occurred around cavities remaining after extrusion. The extruded alloy exhibited a high 0.2% proof strength of 495 MPa and elongation of 3% at room temperature. The Mg grain refinement and dispersion of Mg12ZnY and Mg3Zn3Y2 phases caused by hot extrusion led to high strength at room temperature. Further, the extruded alloy also exhibited superplasticity at temperatures of 623 and 723 K with initial strain rates from 2×10−1 S−1 to 2×10−3 S−1. The maximum elongation was 450% at 723 K with an initial strain rate of 2×10−3 S−1. Grain boundary sliding of Mg grains is the dominant deformation mechanism for the alloy at high temperature ranges.
収録刊行物
-
- MATERIALS TRANSACTIONS
-
MATERIALS TRANSACTIONS 50 (2), 349-353, 2009
公益社団法人 日本金属学会
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1390001204250544000
-
- NII論文ID
- 10024811903
-
- NII書誌ID
- AA1151294X
-
- ISSN
- 13475320
- 13459678
-
- NDL書誌ID
- 9785554
-
- 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