%0 Journal Article %T SLIP SYSTEMS AND DISLOCATION DISTRIBUTION IN α-PHASE OF SUPERPLASTICALLY DEFORMED Ti-6AI-4V ALLOY %A ZHAO Linruo ZHANG Shaoqing YAN Minggao Institute of Aeronautical Materials %A Beijing %A China Lab.No. %A Beijing Institute of Aeronautical Materials %A Beijing %A China %J 金属学报(英文版) %D 1990 %I %X The activated slip systems in the α-phase of the superplastically deformed Ti-6Al-4V alloywere analyzed by systematic operation method with TEM.The results show that thedominately activated slip systems in the α-phase are{01(?)0}〈2(?)0〉and{01(?)}2(?)0〉,The{0001}〈2(?)0〉system as well as the c+a dislocalions of b=1/3]〈11(?)3〉will be acti-vated when the deformation temperature is lowered.Large amounts of TEM observations in-dicate that the dislocations in the α-phase were mainly activated near the triple grain bounda-ry junctions,α/α grain boundaries and α/β interlaces. %U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=C19B08D052F5FD8445F4BB80A1A5D7BF&aid=54A8B54C2B311BEE45B9B4EA0FB807E8&yid=8D39DA2CB9F38FD0&vid=38B194292C032A66&iid=E158A972A605785F&sid=80BD0A2EF8664214&eid=4D7D059FFBF006B9&journal_id=1006-7191&journal_name=金属学报(英文版)&referenced_num=0&reference_num=8