열간 비대칭 압연한 AA1050 Al 판재의 집합조직과 소성변형비 변화

Abstract

The plastic strain ratio is one of the factors of the deep drawability of metal sheets. The plastic strain ratio of Al sheet is low value. Therefore, it is necessary to increase the plastic strain ratio in order to improve the deep drawability of the Al sheet. This study investigated the increase in the plastic strain ratio and the texture change of AA1050 Al sheet after the hot asymmetric rolling. The average plastic strain ratio of initial AA1050 Al sheets was 0.41. After 84% hot asymmetric rolling at 400°C, the average plastic strain ratio was 0.77. The average plastic strain ratio of 84% hot asymmetrically rolled AA1050 Al sheet at 400°C is 1.9 times higher than that of initial AA1050 Al sheet. The ΔRof 84% hot asymmetrically rolled AA1050 Al sheet at 400°C is 1/2 times lower than that of initial AA1050 Al sheet. This result is due to the development of the intensity of the γ-fiber texture and the decrease of the intensity of {001}<100> texture after the hot asymmetric rolling of AA1050 Al sheet.