遅れ破壊特性の異なる高強度マルテンサイト鋼のAFM組織解析
書誌事項
- タイトル別名
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- Atomic Force Microscopy of Tempered Martensitic Steels with Different Delayed Fracture Properties
- オクレ ハカイ トクセイ ノ コトナル コウキョウド マルテンサイト コウ ノ AFM ソシキ カイセキ
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説明
Tempered martensitic microstructures were quantitatively evaluated by AFM and delayed fracture properties were obtained for an induction-heating-quenched and induction-heating-tempered (IHT) specimen and an induction-heating-quenched and furnace-heating-tempered (FHT) specimen of prestressed steel (mass% of 0.36 C, 1.63 Si and 0.72 Mn). The strength levels of both specimens were controlled so that the tensile strength was 1470 MPa. The critical diffusible hydrogen content for delayed fracture was 0.4 and 0.1 mass ppm for the IHT and FHT specimens, respectively. Cementite particles were smaller in the IHT specimen than in the FHT specimen, particularly on prior austenite ($gamma$) grain boundaries. These results demonstrate that delayed fracture property is correlated with cementite particle size on prior $gamma$ grain boundaries.
収録刊行物
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- 九州大学大学院総合理工学報告
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九州大学大学院総合理工学報告 24 (3), 289-296, 2002-12
九州大学大学院総合理工学府
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詳細情報 詳細情報について
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- CRID
- 1390009224836698368
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- NII論文ID
- 110000948605
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- NII書誌ID
- AA1147319X
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- ISSN
- 13467883
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- DOI
- 10.15017/16669
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- HANDLE
- 2324/16669
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- NDL書誌ID
- 6440138
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- 本文言語コード
- ja
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- 資料種別
- departmental bulletin paper
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- データソース種別
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- JaLC
- IRDB
- NDLサーチ
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用可