書誌事項
- タイトル別名
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- Evaluating Solubility and Diffusion Coefficient of Hydrogen in Martensitic Steel Using Computational Mechanics
- マルテンサイトコウ ニ オケル スイソコヨウド ト カクサン ケイスウ ノ ケイサン リキガクテキ ヒョウカ
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<p>Engineering applications of high-strength martensitic steels have been limited because of concerns regarding delayed fracture. Recent experimental and theoretical studies revealed that the presence of mobile hydrogen moving toward cleavage crack surfaces in these steels plays an important role in delayed fracture. Although the accumulation rate of hydrogen is affected by its own concentration and diffusion coefficient, it is still unclear how these properties are influenced by varying carbon content in martensitic steel. In this study, we estimated the hydrogen accumulation rate in martensitic steel under different carbon contents (0.395 and 0.787 mass %) and temperatures (300, 700, and 1000 K) by calculating its hydrogen solubility and diffusion coefficient using computational methods such as the density functional theory, molecular dynamics simulation, and finite element method. Results revealed that the hydrogen accumulation rate tended to increase with the carbon content and vice versa.</p>
収録刊行物
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- 材料
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材料 69 (2), 134-140, 2020-02-15
公益社団法人 日本材料学会
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詳細情報 詳細情報について
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- CRID
- 1390565134829770112
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- NII論文ID
- 130007800428
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- NII書誌ID
- AN00096175
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- ISSN
- 18807488
- 05145163
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- NDL書誌ID
- 030270693
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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
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可