書誌事項
- タイトル別名
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- Environmentally-induced Fatigue Crack Propagation in TiAl and Hydrogen Desorption Analysis
抄録
We investigated the environmental effects on fatigue crack growth rate in nearly lamellar, and duplex TiAl as well as single-phase γ-TiAl. The hydrogen evolution kinetics was analized by the thermal desorption spectroscopy (TDS). The fatigue crack growth rate was accelerated compared with those conducted in dry air, when cathodic charging was applied in a H_3BO_3+KCl solution. In the case of the lamellar and the duplex TiAl, this accelerates was high, in particular, at higher stress intensity factor range. In the case of the single-phase γ-TiAl, however, the threshold value becomes smaller in the cathodically charged condition, with higher crack growth rate. This indicates that the environmental influence is high, in partial, in γ-TiAl, compared with the lamellar and the duplex TiAl. Irrespective of the material tested, the hydrogen evolution rate was increased by cathodic charging, at lower temperature peaks and higher ones. The peaks at lower temperature are correlated with hydrides decomposition and detrapping of hydrogen from microstructual imperfections such as microvoides.
収録刊行物
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- 関西支部講演会講演論文集
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関西支部講演会講演論文集 2002.77 (0), _8-5_-_8-6_, 2002
一般社団法人 日本機械学会
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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
- 1390001205850371072
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- NII論文ID
- 110002492882
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- ISSN
- 24242756
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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
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可