高纯铝中晶界特征分布对变形及退火行为的影响  

Effect of Grain Boundary Characteristic Distribution on Deformation and Annealing Behavior of High Purity Aluminum

作　　者：尹文红[1,2] 王卫国[2,3] 方晓英 

机构地区：[1]山东理工大学机械工程学院,山东淄博255000 [2]上海大学材料研究所,上海200072 [3]福建工程学院材料科学与工程学院,福建福州350118

出　　处：《热加工工艺》2017年第24期245-247,251,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(51171095;51471100)

摘　　要：对高纯铝试样进行了冷轧变形和400℃退火,采用电子背散射衍射(EBSD)技术研究了不同晶界组成的微区组织的变化。结果表明,轧制变形时,小角度晶界的界面在相邻晶粒内的滑移线是平直均匀的,大角度晶界的界面在相邻晶粒内的滑移线是弯曲不均匀的。退火后,部分大角度晶界发生迁移并且有的晶界在原来的位置还留下了鬼线,小角度晶界基本没发生迁移。High purity aluminum samples were subjected to the cold rolling deformation and annealing at 400 ℃. The changes of microstructure in micro-area formed by different grain boundaries were studied by electron backscatter diffraction （EBSD） technique. The results show that when rolling deformation, the slip lines of the interface with the small angle grain boundaries in the adjacent grains are straight and uniform, and the slip lines of the interface with large angle grain boundaries in the adjacent grains are bent and uneven. After annealing, some of the large angle grain boundaries migrate and some grain boundaries in the original positions leave ghost lines, and small angle grain boundaries do not migrate.

关 键 词：高纯铝 冷轧 电子背散射衍射 晶界 

分 类 号：TG339[金属学及工艺—金属压力加工] TG146.21[一般工业技术—材料科学与工程]