書誌事項
- タイトル別名
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- Development of elasto-viscoplastic constitutive equation for Al–Mg alloy with tensile test in partial solidification
- ハンギョウコ ジョウタイ ニ オケル ヒッパリ シケン オ モチイタ Al-Mgケイ ゴウキン ノ ダンネンソセイ コウセイシキ ノ コウチク
- Development of elasto-viscoplastic constitutive equation for Al^|^ndash;Mg alloy with tensile test in partial solidification
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説明
In order to predict the hot tearing during DC casting by using thermal stress analysis, constitutive equations in both solid–liquid coexisting and below solidus of alloy are inevitable. However, previous constitutive equations used in hot tearing predictions have no less than one problem as follows. (1) Testing methods of obtaining material constants weren't appropriate. Firstly, elastic strain reversibility was unconfirmed. Secondary, flat distribution of temperature in gauge length of specimen wasn't guaranteed. Thirdly, strain was measured from not local strain but cross head displacement. Fourth, the melt-back phenomenon was unavoidable in partial melting method which was caused by homogenization of segregation structure. (2) Temperature dependence of strain rate sensitivity of stress wasn't considered. (3) Some material constants were not obtained experimentally but guessed. In this study, elasto-viscoplastic constitutive equations (Hooke's and Norton's laws) for both partial solidification and below solidus were developed. In order to obtain material constants experimentally, two tensile tests which the problem (1) was solved were conducted using Al–5mass%Mg alloy. They were partial solidification tensile tests (above solidus) and high temperature tensile test with high frequency induction (below solidus). Then, temperature dependence of elastic, viscoplastic properties were investigated and material constants were obtained. Furthermore, they were compared with other previous testing methods.
収録刊行物
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- 軽金属
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軽金属 63 (9), 310-317, 2013
一般社団法人 軽金属学会
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詳細情報 詳細情報について
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- CRID
- 1390001206340505984
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- NII論文ID
- 130004775038
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- NII書誌ID
- AN00069773
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- COI
- 1:CAS:528:DC%2BC3sXhvVaqt7%2FL
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- ISSN
- 18808018
- 04515994
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- NDL書誌ID
- 024894479
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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
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- 抄録ライセンスフラグ
- 使用不可