%0 Journal Article
%T DISLOCATION PINNING IN HIGH TEMPERATURE DEFORMED Ni3(Al,Ti) SINGLE CRYSTALS CONTAIINING DISORDERED g PRECIPITATES<br>DISLOCATION PINNING IN HIGH TEMPERATURE DEFORMED Ni3（Al,Ti） SINGLE CRYSTALS CONTAINING DISORDERED γ PRECIPITATES
%A WH Tian
%A M Nemoto
%A <br>W.H.
%A Tian
%A M.
%A Nemoto
%J 金属学报(英文版)
%D 2006
%I 
%X A transmission electron microscopy （TEM） investigation has been performed on the dislocation pinning in Lie-ordered Ni3（Al, Ti） containing disordered γ precipitates.The morphology of deformation induced dislocations in the γ base alloys containing fine dispersion of disordered γ was investigated by means of weak-beam electron microscopy. The superdislocations are strongly attracted to the disordered particles and dissociate on the （111） plane in the γ particles, while they dissociate on the （010） plane in the γ＇ matrix. The disordered γ precipitates play an important role as a pinning point during the cross-slip of superdislocations from （111） to （010） planes in the γ matrix and restrain the cross-slip of superdislocations. The interaction of superdislocations with disordered particles causes the formation of superkinks, jogs and closed loops.
%K superdislocation
%K precipitate
%K attractive interaction
%K cross slip
%K Ll2-ordered Ni3Al<br>透射电子显微镜术
%K 超位错
%K 沉降物
%K 相互吸引
%K 交叉滑移
%K Ni3（Al
%K Ti）
%K 高温变形
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=C19B08D052F5FD8445F4BB80A1A5D7BF&aid=5E97DF36E58BCEC788499A5A6AA868D7&yid=37904DC365DD7266&vid=2A8D03AD8076A2E3&iid=38B194292C032A66&sid=0B4F496D54044D86&eid=F260CE035846B3B8&journal_id=1006-7191&journal_name=金属学报(英文版)&referenced_num=0&reference_num=16