AZ31镁合金在不同轧制方式下的织构演变  

Evolution of textures for AZ31 magnesium alloy sheet by different rolling techniques

作　　者：曲家惠[1] 姚路明[1] 王福[2] 

机构地区：[1]沈阳理工大学装备工程学院,辽宁沈阳110168 [2]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《轻合金加工技术》2008年第8期29-32,40,共5页Light Alloy Fabrication Technology

基　　金：国家高技术研究发展计划项目(2003AA331080)

摘　　要：采用单向轧制和交叉轧制对AZ31镁合金热轧板进行冷轧,研究不同轧制方式对织构演变的影响。结果表明,单向冷轧的形变量超过15.37%,交叉冷轧的形变量超过5.79%,出现切变带之后断裂。在相同变形量下,单向轧制的{0001}面各织构组分强度趋向均匀分布;交叉轧制的{0001}面各织构组分向{0001}<21 10>聚集增强。随形变量增加,单向轧制的{0001}<1010>和{0001}<21 10>织构强度呈波动性增加;交叉轧制的{0001}<1010>织构稍有增强后开始减弱,而{0001}<21 10>织构强度呈连续性增加。An AZ31 magnesium alloy sheet is cold-rolled by using one pass rolling and cross rolling techniques. This study focuses on how different rolling techniques influence the evolvement of textures. The results show the deformation variables exceed 15.37% under one pass cold rolling conditions and 5.79% under cross cold rolling conditions. The sheet will break after a shear-band appears. When the deformation variables remain the same, the component intensity of each texture for surface 10001 t by one pass rolling tends to exhibits even distribution while the texture components of surface {0001 t 〈 1010 〉 and 10001 t 〈 21 10 〉 by cross rolling will get enhanced towards 10001t 〈 21 10 〉 . With the increase of deformation variables, the component intensity of one pass rolling {0001t 〈 1010 〉 and {0001} 〈 21 10 〉 fluctuates increasingly. The crossed rolled texture {0001} 〈 1010 〉 gets stronger at first and then gets weaker, while the intensity of texture {0001} 〈 21 10 〉 continues to increase.

关 键 词：单向轧制 交叉轧制 AZ31镁合金 织构 

分 类 号：TG339[金属学及工艺—金属压力加工]