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Vol.47, No.6, 363 ~ 372, 2009
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| Title |
| Effect of Lubrication on the Evolution of Texture and Microstructure in AA5052 Sheet during Shape Rolling |
| 박은수 Eun Soo Park , 강형구 Hyung Gu Kang , 허무영 Moo Young Huh , 김휘준 Hwi Jun Kim , 배정찬 Jung Chan Bae |
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| Abstract |
| The effect of lubrication on the evolution of strain states during shape rolling in AA5052 sheet was studied by the finite element method (FEM) simulation. The strain states calculated by FEM were verified by texture analysis. Shape rolling with and without lubrication produces shape-rolled samples in fairly similar outer shapes, since the distribution of normal strain components is nearly independent of the lubrication condition. In contrast, the distribution of shear strain components strongly depends on the lubrication condition. Shape rolling without lubrication gives rise to the development of strong shear strain gradients leading to the formation of highly inhomogenous textures and microstructures. The {011}//ND fiber develops during rolling with the operation of plane strain plus ε22. (Received January 14, 2009) |
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| Key Words |
| shape rolling, strain state, texture, microstructure, finite element method |
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