多晶铝轧制变形的织构演变 Ⅰ．实验研究  

TEXTURE EVOLUTION OF POLYCRYSTALLINE ALUMINUM DURING ROLLING DEFORMATION Ⅰ.Experimental Study

作　　者：陈志永[1] 才鸿年[2] 常亚喆[1,3] 张新明[1] 刘楚明[1] 

机构地区：[1]中南大学材料科学与工程学院,长沙410083 [2]北京理工大学材料科学与工程学院,北京100081 [3]中国空空导弹研究院,洛阳471009

出　　处：《金属学报》2008年第11期1316-1321,共6页Acta Metallurgica Sinica

基　　金：国家自然科学基金项目50301016;湖南省自然科学基金项目03JJY5020资助~~

摘　　要：采用取向分布函数和取向线分析方法研究了初始自由分布和具有近似立方织构的多晶铝轧制织构的演变规律.结果表明:随着轧制变形的进行,对于初始自由分布的样品,晶粒取向主要向α,β取向线附近聚集,其形变织构主要由C,S及B织构组成,且3种织构成分密度值相差不大;对于初始具有近似立方织构的样品,晶粒取向主要向β取向线上聚集,其形变织构主要由C,S织构组成,B织构成分相对较弱.2种情况下S织构成分体积分量均比C,B织构高.Experimental investigations on rolling texture evolution in polycrystalline aluminum with initial randomly distributed texture and nearly cube texture were carried out via orientation distribution functions and orientation line analysis.The results show that the rolling textures for the sample with initial randomly distributed texture mainly consists of C,S and B components during rolling deformation while the orientation density values for the three textures only have slight difference, most crystallites aggregate along theαandβorientations lines.The rolling texture for the sample with initial cube texture mainly consists of components C and S,while the orientation density value for B component is much lower than those for C and S components,most crystallites accumulate along theβfiber.The volume fraction for S texture component is much higher than those for C and B textures under the two cases.

关 键 词：多晶铝 轧制变形 初始织构 自由分布 织构演变 

分 类 号：TG146[一般工业技术—材料科学与工程] TG111[金属学及工艺—金属材料]