Effects of Fine Particle Peening on Torsional Fatigue Strength of a TRIP-aided Bainitic Ferrite Steel
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- MIZUNO Yuta
- Graduate School, Shinshu University
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- HOJO Tomohiko
- Department of Mechanical Engineering, Iwate University
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- SUGIMOTO Koh-ichi
- Department of Mechanical Systems Engineering, Shinshu University
Bibliographic Information
- Other Title
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- TRIP型ベイニティックフェライト鋼のねじり疲労強度に及ぼす微粒子ピーニングの影響
- TRIPガタ ベイニティックフェライトコウ ノ ネジリ ヒロウ キョウド ニ オヨボス ビリュウシ ピーニング ノ エイキョウ
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Abstract
The effects of fine particle peening (FPP) on the torsional fatigue properties were investigated in the case of a transformation-induced plasticity (TRIP)-aided bainitic ferrite (TBF) steel that has potential for use in precision gears. FPP resulted in a significant increase in the torsional fatigue limit of the TBF steel, compared with that of a quenched and tempered SNCM420 steel. An increase in the torsional fatigue limit was larger than that in the rotating bending fatigue limit. In addition, the crack growth rate and the threshold stress intensity range of this steel were lower and higher, respectively, than those of its SNCM420 counterpart. These differences resulted from the TBF steel having a higher (1) Vickers hardness, (2) compressive residual stress, and (3) volume fraction of untransformed retained austenite in the surface hardened layer, which suppressed crack initiation and extension.
Journal
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- Journal of the Society of Materials Science, Japan
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Journal of the Society of Materials Science, Japan 64 (11), 853-858, 2015
The Society of Materials Science, Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001205445076096
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- NII Article ID
- 130005109746
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- NII Book ID
- AN00096175
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- ISSN
- 18807488
- 05145163
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- NDL BIB ID
- 026945865
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed