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Vol.48, No.7, 605 ~ 615, 2010
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| Title |
| Prediction of the Macroscopic Plastic Strain Ratio in AA1100 Sheets Manufactured by Differential Speed Rolling |
| 최시훈 Shi Hoon Choi , 김형욱 Hyoung Wook Kim , 조재형 Jae Hyung Cho , 강석봉 Seok Bong Kang , 최재권 Jae Kwon Choi |
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| Abstract |
| Conventional rolling (symmetric) and differential speed rolling (DSR) were both applied to AA1050 sheets at various velocity ratios, from 1 to 2 between the top and bottom rolls. An electron backscatter diffraction (EBSD) technique was used to measure texture inhomogeneity through the thickness direction. After the annealing process, the annealing texture of the DSR processed sheets was different from that of conventionally rolled sheets. The velocity ratio between the top and bottom rolls affected the texture inhomogeneity and macroscopic plastic strain ratio of the AA1050 sheets. A prediction for the macroscopic plastic strain ratio of AA1050 sheets was carried out using a visco-plastic self-consistent (VPSC) polycrystal model. The strain ratio directionality that was predicted using the VPSC polycrystal model was in good agreement with experimental results. |
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| Key Words |
| DSR, FBSD, texture, plastic radio, polycrystal model |
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