横轧3105铝合金织构演变的定量分析  

Quantitative analysis of texture evolution in cross-rolled 3105 aluminum alloy

作　　者：孔祥宇[1] 李敬[1] 于翠翠[1] 苑辉[1] 刘文昌[1] 

机构地区：[1]燕山大学材料科学与工程学院亚稳材料制备技术与科学国家重点实验室,秦皇岛066004

出　　处：《中国有色金属学报》2009年第11期1917-1922,共6页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金资助项目(50874097)

摘　　要：采用X射线衍射仪研究3105铝合金在横轧过程中织构的演变。结果表明:3105铝合金热轧板材具有强的β纤维轧制织构,在横轧过程中B′{110}<111>、S′{123}<17229>和C′{112}<110>取向是不稳定的,它们将逐渐向新的坐标系中β纤维的位置旋转;随横轧压下量增大,C′和S′取向强度快速降低,B′取向强度先增加后降低,而β纤维轧制织构的强度逐渐增加;β纤维和剩余组分织构体积分数的变化与轧制真应变的关系遵循Avrami方程,强的初始B′、S′和C′织构显著地提高了β纤维织构的形成速率。The hot band of continuous cast 3105 aluminum alloy was cold rolled to different reductions along the original transverse direction. The texture evolution during cross-rolling was investigated by X-ray diffractometry. The results show that the hot band of 3105 aluminum alloy possesses a strong b fiber rolling texture. After 90？ rotation about the normal direction, the typical B, S and C orientations on the b fiber transform into the B￠{110}á111？, S￠{123}á17229？ and C￠{112}á110？ orientations. These orientations are unstable and gradually rotate to the b fiber in the new sample reference frame. As the rolling reduction increases, the intensities of the C￠ and S￠ orientations decrease, while the intensity of the B￠ orientation first increases and then decreases. At the same time, the strength of the b fiber rolling texture increases with increasing rolling reduction. The variation in the volume fractions of the b fiber and remainder components with rolling true strain follows the Avrami equation. The strong initial B￠, S￠ and C￠ textures significantly increase the formation rate of the b fiber rolling texture.

关 键 词：铝合金 横轧 织构 

分 类 号：TG146.2[一般工业技术—材料科学与工程]