微量Sr对Al-Mg-Si-Cu合金板材织构的影响  

Effect of Microelement Sr on Textures of Al-Mg-Si-Cu Based Alloy Sheets

作　　者：卢广玺[1] 陈海军[1] 关绍康[1] 

机构地区：[1]郑州大学材料科学与工程学院,河南郑州450002

出　　处：《轻合金加工技术》2005年第1期28-30,32,共4页Light Alloy Fabrication Technology

基　　金：河南省杰出人才创新基金(0321001100)

摘　　要：应用取向分布函数(ODF)研究和分析了微量Sr对Al Mg Si Cu合金板材织构的影响。结果表明:Al Mg Si Cu合金板材主要存在{100}<011>旋转立方织构,另还存在{112}<111>铜织构,{111}<110>、{111}<112>黄铜R织构。加入微量Sr可以改变织构组分含量。当加入0.093%Sr时,降低了其旋转立方织构的含量。其原因是Sr的加入引起基体晶格变化,降低铝合金板材的层错能,阻碍了交滑移的进行,造成织构类型的转变。The effect of microelement Sr on the textures of Al-Mg-Si-Cu based alloy sheets is studied by means of orientation distribution functions (ODFs).The results show that the major texture of Al-Mg-Si-Cu based alloy sheets are rotated cube texture {100}<011>,{112}<111>copper texture and{111}<110?111}<112>R texture.The content of the texture can be changed by adding microelement Sr.The content of rotated cube texture is reduced when 0.093%Sr is added.The reason is that the addition of Sr into alloy affects the matrix lattice,reduces the energy of the fault layer,hinders the cross slide and changes the types of textures.

关 键 词：AL-MG-SI-CU合金 SR 织构 

分 类 号：TG115[金属学及工艺—物理冶金]