書誌事項
- タイトル別名
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- Effect of Aging Microstructure on Hydrogen Embrittlement Sensitivity in an Al-Mg-Si Alloy
- Al Mg Si ゴウキン ノ スイソゼイカ カンジュセイ ニ オヨボス ジコウ ソシキ ノ エイキョウ
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In recent years, the fuel cell vehicle that uses hydrogen as clean energy has been developed among automobile companies. To store high compressed hydrogen gas in the fuel cell vehicle, a special tank is needed and Al-Mg-Si base alloys have been regarded as one of the candidate materials for the tank liner. However, little is know about the effect of atmospheric hydrogen on the mechanical properties of the Al-Mg-Si alloy. In this study, effect of aging microstructure on hydrogen embrittlement (HE) sensitivity of the Al-Mg-Si alloy was investigated by means of the tensile testing machine equipped with quadruple mass spectrometer in an ultrahigh vacuum chamber, which was originally developed by our group. It is proved that the elongation decreases when the slow strain rate testing (SSRT) is carried out in humid air. The amount of hydrogen evolution at the moment of fracture is clearly decreased particularly in the OA specimen. The hydrogen desorption amount from the OA specimen is smaller than that from the PA specimen after the predeformation by SSRT. As the aging proceeds, the composition of the grain boundary precipitates is changed. It is assumed the PA condition has higher capability to trap hydrogen than the OA condition in the Al-Mg-Si alloy.
収録刊行物
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- 日本機械学会論文集A編
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日本機械学会論文集A編 73 (736), 1366-1374, 2007
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390282679455571712
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- NII論文ID
- 110006532718
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- NII書誌ID
- AN0018742X
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- COI
- 1:CAS:528:DC%2BD1cXjvVSgu7w%3D
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- ISSN
- 18848338
- 03875008
- http://id.crossref.org/issn/03875008
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- NDL書誌ID
- 9321861
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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