한국소성가공학회:학술대회논문집 (Proceedings of the Korean Society for Technology of Plasticity Conference)
- 한국소성가공학회 2004년도 제5회 압연심포지엄 신 시장 개척을 위한 압연기술
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- Pages.19-24
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- 2004
냉간 대칭/비대칭 압연시 압연변형율 상태와 집합조직의 형성
Evolution of Strain States and Textures During Symmetrical/Asymmetrical Cold Rolling
- Huh Moo-Young (Div. of MSE, Korea University) ;
- Lee Jae-Pil (Div. of MSE, Korea University) ;
- Lee Jae-Hyup (Div. of MSE, Korea University)
- 발행 : 2004.08.01
초록
Symmetrical and asymmetrical rolling was performed in AA 1050 sheets. Asymmetrical rolling was carried out by using different roll velocities of upper and lower rolls. The effect of the reduction per rolling pass on the formation of textures and microstructures during symmetrical and asymmetrical rolling was studied. In order to intensify the shear deformation, symmetrical and asymmetrical rolling was carried out without lubrication. The strain states associated with rolling were investigated by simulations with the finite element method (FEM). A fairly homogeneous residual shear strain throughout the sheet thickness was observed after asymmetrical rolling. Symmetrical rolling with a high friction gave rise to a strong net shear strain gradient in the sheet thickness.