Fatigue, Cyclic Deformation and Microstructure. Microstructural Development during Fatigue of a Polycrystalline 3003 Aluminum Alloy.
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- Fujii Toshiyuki
- Department of Innovative and Engineering Materials, Tokyo Institute of Technology
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- Shintate Hiroshi
- Department of Materials Science and Engineering, Tokyo Institute of Technology
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- Yaguchi Hiroshi
- Materials Research Laboratories, Kobe Steel, Ltd.
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- Mitani Hiroyuki
- Materials Research Laboratories, Kobe Steel, Ltd.
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- Inada Atsushi
- Materials Research Laboratories, Kobe Steel, Ltd.
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- Shinkai Koichi
- Energy and Chemical Plant Group, Kobe Steel, Ltd.
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- Kumai Shinji
- Department of Materials Science and Engineering, Tokyo Institute of Technology
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- Kato Masaharu
- Department of Innovative and Engineering Materials, Tokyo Institute of Technology
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Abstract
Polycrystalline 3003 aluminum alloy has been cyclically deformed at room temperature with constant plastic-strain amplitudes in the range 1×10-4-5×10-3. At any strain amplitude, stress saturation was not observed: A monotonic hardening occurred at low plastic-strain amplitudes less than 5×10-4. Sequence of hardening, softening and secondary hardening was found at medium strain amplitudes in the range 1×10-3-3×10-3. Dislocation configurations in fatigued samples depended on the strain amplitudes and the number of cycles. At low strain amplitudes less than 1×10-3, loop patches with a particular periodicity in dislocation arrangement were formed during the first hardening stage. The labyrinth structure composed of dislocation walls periodically arranged along the {100} planes was formed during the softening stage at the medium strain amplitudes. The stable dislocation configuration after the secondary hardening was found to be the cell structure. The microstructural analysis using transmission electron microscopy is well applicable to the fatigue life assessments of the 3003 aluminum alloy.
Journal
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- ISIJ International
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ISIJ International 37 (12), 1230-1236, 1997
The Iron and Steel Institute of Japan
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Details 詳細情報について
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- CRID
- 1390001206453255168
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- NII Article ID
- 10002457939
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- NII Book ID
- AA10680712
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- COI
- 1:CAS:528:DyaK1cXitVSqs7g%3D
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- ISSN
- 13475460
- 09151559
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed