%0 Journal Article
%T CHANGES OF GRAIN BOUNDARY INTERNAL FRICTION PEAK OF PURE COPPER IN THE COURSE OF CONSTANT RATE TENSILE DEFORMATION<br>恒速拉伸过程中纯 Cu 晶界内耗峰的变化
%A DAI Yong LIU Shaomin KONG Qingping
%A <br>戴勇
%A 刘少民
%A 孔庆平
%J 材料研究学报
%D 1991
%I 
%X The changes of grain boundary internal friction peak and the correspondingmodulus relaxation of pure copper have been investigated in the couse of constant rate ten-sile deformation at different temperatures.The following four relaxation parameters:(a)the peak temperature,(b)the peak height,(c)the activation energy,and(d)the modulus re-laxation strength are investigated.Experimental results show that the strength of grainboundaries changes during deformation,and the extent of strengthening is closely corre-lated to the type of fracture.The present work supports and extends the conclusions of ourprevious works on the process of creep fracture.
%K grain boundary
%K internal friction
%K deformation
%K fracture<br>晶界
%K 内耗
%K 形变
%K 断裂
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=C101C4C04993B4D94FCD8446E6CBEB3B&aid=4DFA63D8D4D32808&yid=116CB34717B0B183&vid=94C357A881DFC066&iid=CA4FD0336C81A37A&sid=CA4FD0336C81A37A&eid=94C357A881DFC066&journal_id=1005-3093&journal_name=材料研究学报&referenced_num=1&reference_num=1