%0 Journal Article
%T HOT DEFORMATION BEHAVIOR OF GH761 WROUGHT Ni BASE SUPERALLOY<br>GH761变形高温合金的热变形行为
%A ZHAO Meilan SUN Wenru YANG Shulin QI Feng GUO Shouren HU Zhuangqi Institute of Metal Research
%A Chinese Academy of Sciences
%A Shenyang
%A <br>赵美兰
%A 孙文儒
%A 杨树林
%A 祁峰
%A 郭守仁
%A 胡壮麒
%J 金属学报
%D 2009
%I 
%X The flow stress-strain behavior of GH761 alloy was investigated via hot compression testing. The peak stress σp, starting steady--state stress σs, and corresponding strain εp, εs decrease with decreasing strain rate ε at constant temperature. At constant strain rate, σp, σs and εs drop with rising temperature, but εp does not change obviously. On the basis of reducing original grain size, lowering deformed temperature and enhancing strain rate can well refine structure. The microstructure will be most homogenous and finest when the strain reaches the level that DRX is finished exactly. Further increasing the strain will promote the grain growth. The hot deformation constitutive equation obtained is as follows: ε=6.5×106σp4.86exp(-461×103/RT).
%K GH761<br>变形高温合金
%K 热变形
%K 组织演变
%K 动态再结晶
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=295B370FF22A067AE39724B5AAF63A06&yid=DE12191FBD62783C&vid=94E7F66E6C42FA23&iid=CA4FD0336C81A37A&sid=9C65ADEB5990B252&eid=06EA2770E96C5402&journal_id=0412-1961&journal_name=金属学报&referenced_num=2&reference_num=19