%0 Journal Article
%T IN SITU OBSERVATION OF DISLOCATION BEHAVIOR IN PLASTIC ZONE AHEAD OF A CRACK-TIP IN A CO-BASE SUPERALLOY<br>钴基高温合金尖塑性区位错结构的原位观察
%A LU Zheng
%A XU Yongbo
%A HU Zhuangqi
%A <br>吕铮
%A 徐永波
%A 胡壮麒
%J 金属学报
%D 1998
%I 
%X This paper presents a study of dislocation behavior in a plastic zone ahead of a crack-tip in a Co-base superalloy during in situ deformation in a TEM. The results show that the dislocations emitted from the crack-tip are partials when the tensile acs is 51]. However,when the tensile axis is 121], the dislocations from the crack-tip are perfect, which will extend during their motion toward the matrix. The stress state ahead of the crack-tip and its effect on the dislocation behavior in the plastic zone were also analysed.
%K Co-base superalloy
%K in situ tensile
%K dislocation
%K crack-tip<br>钴基合金
%K 原位拉伸
%K 位错
%K 裂尖
%K 高温合金
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=5175C9D46105FE5D2D6562E72E6EA48B&yid=8CAA3A429E3EA654&vid=339D79302DF62549&iid=0B39A22176CE99FB&sid=28F8B56DB6BEE30E&eid=76B5E24D6EC46B4B&journal_id=0412-1961&journal_name=金属学报&referenced_num=0&reference_num=1