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- 小山 元道
- 九州大学
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- 張 昭
- 九州大学 工学府
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- Cem Tasan Cemal
- Massachusetts Institute of Technology
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- 津﨑 兼彰
- 九州大学
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- 野口 博司
- 九州大学
書誌事項
- タイトル別名
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- Fatigue of TRIP maraging steel: effects of metastable laminate
抄録
<p>Fatigue properties of transformation-induced plasticity (TRIP) maraging steel were investigated by rotating bending fatigue testing. An initial microstructure of the TRIP maraging steel is maraging martensite with metastable austenite films. First, as we expected, precipitation hardening by intermetallic compound realized outstanding improvement of fatigue limit. In addition, compared to TRIP steel containing metastable austenite and pearlitic steel containing nano-laminate, the TRIP maraging steel showed superior fatigue limit and fatigue life at the same stress amplitude normalized by tensile strength. The higher fatigue limit is attributed to suppression of crack initiation owing to TRIP effect and subsequent transformation-induced crack closure (TICC). The higher fatigue life stems from roughness-induced crack closure (RICC). More specifically, the TRIP and TICC originates from the metastability, and the RICC was caused by the nano-laminate structure of the TRIP maraging steel.</p>
収録刊行物
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- M&M材料力学カンファレンス
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M&M材料力学カンファレンス 2016 (0), OS02-07-, 2016
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
- 1390001205871408000
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- NII論文ID
- 130007120147
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- ISSN
- 24242845
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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