書誌事項
- タイトル別名
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- Microstructure and Mechanical Properties of AZ61Mg Alloy Fabricated by Multi-Directional Forging Using Die under Decreasing Temperature Conditions
- カナガタ オ モチイタ コウオン タジク タンゾウ AZ61Mg ゴウキン ノ ソシキ ト キカイテキ セイシツ
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抄録
A hot extruded AZ61Mg alloy was multi-directionally forged (MDFed) under decreasing temperature conditions using a die. MDFing was successfully carried out, and the coarse initial grains with an average grain size of 21.6 μm were gradually fragmented to 0.3 μm in average at cumulative strain of ∑Δε=7.2. It showed quite high hardness of 958 MPa and tensile strength of 465 MPa with ductility of 15%. The tensile behavior of the ultrafine grained AZ61 Mg alloy exhibited large temperature and strain rate dependency irrespective of temperature. Superplasticity of 680% elongation to fracture could be achieved at 423 K and at strain rate of 1.0×10−4 s−1. Such mechanical properties depending on temperature and strain rate were reasonably understood by considering the effect of grain boundary sliding. The tensile strength of the MDFed AZ61Mg alloy was further raised to 490 MPa by additional cold rolling.<br>
収録刊行物
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- 日本金属学会誌
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日本金属学会誌 79 (6), 295-302, 2015
公益社団法人 日本金属学会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390001206481015552
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- NII論文ID
- 130005071924
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- NII書誌ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL書誌ID
- 026517925
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可
