Improvement of Fatigue Properties by Means of Continuous Cyclic Bending and Annealing in an Al-Mg-Mn Alloy Sheet
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- Takayama Yoshimasa
- Department of Mechanical Systems Engineering, Utsunomiya University
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- Sasaki Jun
- Department of Mechanical Systems Engineering, Utsunomiya University
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- Kato Hajime
- Department of Mechanical Systems Engineering, Utsunomiya University
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- Watanabe Hideo
- Department of Mechanical Systems Engineering, Utsunomiya University
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The fatigue properties in the Al-Mg-Mn alloy sheet subjected by the continuous cyclic bending (CCB) and annealing have been investigated. By the CCB and subsequent annealing, the gradient microstructure with coarse-grained surface layers and fine-grained central layer is produced in the sheet. The fatigue life of the CCBent and annealed sheet is 2—4 times longer than that of the as-received one. The existence of the coarse-grained surface layers makes the crack propagation rate lower by a factor of 1/2 to 1/3. The fatigue crack growth in the sheet consisting of such different microstructure layers is characterized by the fractography. Further, factors improving the fatigue properties are discussed.
収録刊行物
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 45 (6), 1833-1838, 2004
公益社団法人 日本金属学会
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詳細情報
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- CRID
- 1390001204250370432
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- NII論文ID
- 130004452486
- 30018850510
- 10013135879
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- NII書誌ID
- AA1151294X
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- COI
- 1:CAS:528:DC%2BD2cXlvVanur4%3D
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- ISSN
- 13475320
- 13459678
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- NDL書誌ID
- 6981116
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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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- 使用不可