%0 Journal Article
%T MICROSTRUCTURAL EVOLUTION OF COLUMNAR GRAIN Al DURING COLD ROLLING II. Mircoscopic Subdivision<br>柱状晶Al在冷轧过程中微观组织演变的定量表征Ⅱ.微观分裂
%A WU Guilin
%A LIU Wei
%A A Godfrey
%A LIU Qing
%A <br>吴桂林
%A 刘伟
%A A. Godfrey
%A 刘庆
%J 金属学报
%D 2004
%I 
%X Columnar grain Al samples with {001} (uv0} orientations were cold rolled to reductions of 10%, 30% and 50%, respectively. The microscopic subdivision of the matrix bands in grains with different orientations was quantitatively characterized in detail by using EBSP technique. It is found that all the grains are microscopically subdivided into dislocation cell blocks. But the microstructures of differently oriented grains are different after rolling. With increasing strain, the misorientation angles across the dislocation boundaries increase, following a power relationship with an exponent of 2/3. By the Frank formula, the dislocations in the dislocation boundaries are mainly from the slip systems decided by the Schmid factors.
%K columnar grain Al
%K cold rolling
%K EBSP
%K microstructure<br>柱状晶Al
%K 冷轧
%K EBSP
%K 微观组织结构
%K 微观分裂
%K 定量表征
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=A82972A199C8057B&yid=D0E58B75BFD8E51C&vid=1371F55DA51B6E64&iid=DF92D298D3FF1E6E&sid=6452E1221020E61F&eid=EB8E83807F36F05B&journal_id=0412-1961&journal_name=金属学报&referenced_num=0&reference_num=14