Mechanism of strengthening of cube texture for high purity aluminum foils by additional-annealing  

作　　者：张新明 刘胜胆 唐建国 周卓平 

机构地区：[1]School of Materials Science and Engineering

出　　处：《中国有色金属学会会刊：英文版》2003年第3期499-503,共5页Transactions of Nonferrous Metals Society of China

基　　金：Project(5 0 2 3 10 3 0 )supportedbytheNationalNaturalScienceFoundationofChinaandproject (G1999064908)supportedbytheNationalKeyFundamentalResearchandDevelopmentProgramofChina

摘　　要：The mechanism of strengthening of cube texture ({001}<100>) by additional annealing of high purity aluminum foils was investigated by using orientation distribution functions (ODFs) and electron back scattered diffraction (EBSD). The results of ODFs and fiber show that the orientation densities of the S {123}<634> and Cu {112}<111> components increase in both the additional annealed samples and the 0.11 mm final cold rolled foils. And the EBSD results demonstrate that cube nuclei can be identified in the deformed matrix of those additional annealed samples. It is suggested that the strengthening of cube texture can be brought out by the increasing of components of S and Cu and the formation of cube nuclei caused by additional annealing. Moreover, it is found that the cube texture increases first and then decreases with increasing additional annealing temperature, and it is the strongest at 180 ℃.The strengthening of cube texture by additional annealing is proposed as the result of oriented growth of cube subgrains.The mechanism of strengthening of cube texture ({001}<100>) by additional annealing of high purity aluminum foils was investigated by using orientation distribution functions (ODFs) and electron back scattered diffraction (EBSD). The results of ODFs and fiber show that the orientation densities of the S {123}<634> and Cu {112}<111> components increase in both the additional annealed samples and the 0.11 mm final cold rolled foils. And the EBSD results demonstrate that cube nuclei can be identified in the deformed matrix of those additional annealed samples. It is suggested that the strengthening of cube texture can be brought out by the increasing of components of S and Cu and the formation of cube nuclei caused by additional annealing. Moreover, it is found that the cube texture increases first and then decreases with increasing additional annealing temperature, and it is the strongest at 180 ℃.The strengthening of cube texture by additional annealing is proposed as the result of oriented growth of cube subgrains.

关 键 词：高纯铝箔 退火 强化机制 立方结构 ODF EBSD 

分 类 号：TG156.2[金属学及工艺—热处理]