鋼の耐水素侵食性におよぼす旧オーステナイト粒界の影響
書誌事項
- タイトル別名
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- Influence of prior austenite grain boundary on the resistance to hydrogen attack of steel.
説明
The vessels operated under high temperature and pressure hydrogen are composed of welded structures. It is generally said that the weld has higher susceptibility to hydrogen attack than the base metal.<br>One of factors which influence hydrogen attack in the welds, seems to be presence of prior austenite grain boundaries.<br>In this paper, the effects of microstructural change at the prior austenite grain boundaries were investigated with 9% Ni steel in which no carbide changes occur during tempering.<br>Hydrogen attack was severer in the specimen with higher tensile strength. However, electron microscopic examination indicated that the degree of the hydrogen attack varied with microstructural change in specimens with the same strength level.<br>The favorable microstructure is that with secondary austenite precipitated on the prior austenite grain boundaries during tempering.<br>It may be concluded that the prior austenite grain boundaries have high susceptibility to hydrogen attack and the resistance to it is improved by discontinuities in the prior austenite grain boundaries.
収録刊行物
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- 圧力技術
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圧力技術 27 (2), 99-106, 1989
一般社団法人 日本高圧力技術協会
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詳細情報 詳細情報について
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- CRID
- 1390282679592642944
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- NII論文ID
- 130004092000
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- ISSN
- 13479598
- 03870154
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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
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
