書誌事項
- タイトル別名
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- Effect of strain rate and specimen size on intergranular fracture of Si-rich Al-Mg-Si alloy sheets
- 過剰Si型Al-Mg-Si合金薄板材の粒界破壊に対するひずみ速度と試験片寸法の影響
- カジョウ Siガタ Al Mg Si ゴウキン ハクバンザイ ノ リュウカイ ハカイ ニ タイスル ヒズミ ソクド ト シケンヘン スンポウ ノ エイキョウ
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In this study, the effects of specimen size and strain rate on the intergranular fracture of Si-rich 6000 aluminum alloy sheets were investigated by using tensile tests and by finite element analysis. The tensile tests were carried out by using specimens having two different sizes, two different (coarse and fine) grain sizes, and two types of excess Si under three different strain rates including a dynamic strain rate (10−1/s). With an increase in the strain rate and excess Si, the elongation decreased and the fracture mode of the intergranular fracture changed from ductile to brittle. The results of FEM analysis showed that the deformation of the grain boundary was restrained by the constraint effect of the plane strain. Therefore, the elongation of a specimen with a small aspect ratio of cross section increased as compared to that of a specimen with a large aspect ratio of cross section. The result of image analysis and the analysis of variance for the fracture surface showed that the strain rates are the most important factor determining the change of the intergranular fracture mode from ductile to brittle.
収録刊行物
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- 軽金属
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軽金属 60 (12), 635-640, 2010
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
- 1390001206339174144
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- NII論文ID
- 130004774945
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- NII書誌ID
- AN00069773
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- ISSN
- 18808018
- 04515994
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- NDL書誌ID
- 10924983
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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