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Strength and ductility of ultrafine grained aluminum and iron produced by ARB and annealing |
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| Authors: | N. Tsuji Y. Ito Y. Saito Y. Minamino |
| Affiliation: | a Department of Adaptive Machine Systems, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan b Materials Technology Department, Osaka University, IHI Co., Ltd., 3-1-15 Toyosu, Koto-ku, Tokyo 135-8732, Japan c Department of Materials Science & Engineering, Osaka University, Osaka, Japan |
| Abstract: | Strength and ductility of ultrafine grained (UFG) aluminum and iron fabricated by ARB and annealing were clarified in the grain sizes ranging from 200 nm to 20 μm. Strength held Hall–Petch relationship, while uniform elongation of the UFG materials was limited below a few percents. The limited uniform elongation in the UFG materials could be explained in terms of plastic instability. |
| Keywords: | Severe plastic deformation Tensile test Aluminum Steels Mechanical properties |
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