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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Abstract
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.
Journal
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 45 (6), 1833-1838, 2004
The Japan Institute of Metals and Materials
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Keywords
Details 詳細情報について
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- CRID
- 1390001204250370432
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- NII Article ID
- 130004452486
- 30018850510
- 10013135879
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- NII Book 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 BIB ID
- 6981116
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed