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- Kaneko Yoshihisa
- Department of Mechanical Engineering, Osaka City University
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- Hayashi Shingo
- Department of Mechanical Engineering, Osaka City University
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- Vinogradov Alexei
- Department of Mechanical Engineering, Osaka City University
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説明
The cyclic response of the SUS316L stainless steel with the nanostructure induced by profuse twinning during equal channel angular pressing (ECAP) at 423 K was investigated with the focus on the shape of the hysteresis loops and their evolution with cycling. The SUS316L steel with the nanostructured twins showed a very high stress amplitude if compared to their conventional counterparts. However, unlike the as-quenched specimens, the ECAPed SUS316L steel revealed considerable cyclic softening at plastic strain amplitudes above 2 × 10−4. Besides, the ECAPed specimens showed characteristic stress asymmetry behavior during fatigue. At the initial stages of the fatigue tests, a tensile peak stress of the hysteresis loop was higher than a compressive one. Then, the tensile peak stresses gradually decreased with increasing cycles and finally became lower than the compressive peak stress under plastic strain amplitudes higher than 2 × 10−4. Since no stress asymmetry was detected for the as-quenched sample, the observed stress asymmetry behavior was attributed to the specific asymmetric response of the directionally sheared microstructure created during ECAP.
収録刊行物
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 54 (9), 1612-1618, 2013
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390001204249693696
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- NII論文ID
- 10031194644
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- NII書誌ID
- AA1151294X
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- COI
- 1:CAS:528:DC%2BC3sXhslejtrvK
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- ISSN
- 13475320
- 13459678
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- NDL書誌ID
- 024795010
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- KAKEN
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- 使用不可