%0 Journal Article
%T EFFECT OF Mg AND Zr ADDITION ON CREEP CRACK GROWTH BEHAVIOUR OF A Ni-BASE SUPERALLOY
%A GUO Encai XU Fengqin Central Iron
%A Steel Research Institute
%A Ministry of Metallurgical Industry
%A Beijing
%A China GUO Encai
%A DeptNo
%A Central Iron
%A Steel Research Institute
%A Ministry of Metallurgical Industry
%A Beijing
%A China
%A <br>GUO Encai XU Fengqin Central Iron and Steel Research Institute
%A Ministry of Metallurgical Industry
%A Beijing
%A China GUO Encai
%A Dept.No.
%A Central Iron and Steel Research Institute
%A Ministry of Metallurgical Industry
%A Beijing
%A China
%J 金属学报(英文版)
%D 1989
%I 
%X The creep crack growth(CCG)and the time to carck initiation and rupture of specimen(t_(rc)and t_r)were measured by means of electrical potential method on single edge notchedspecimens at 700℃.The field near the crack tip under steady-state creep was represented byenergy rate integral(C~*),and the CCG rate as a function of C~* has been obtained.Theagreement between the predicted and observed t_(rc)values is quite good.It was found that theaddition of small amount of Mg and Zr in the alloys causes t_(rc)and t_r of the specimens to in-crease significantly.
%K Ni-base alloy
%K Mg
%K Zr
%K creep crack growth rate
%K single edge notched
%K specimen<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=C19B08D052F5FD8445F4BB80A1A5D7BF&aid=CCAD46C3AC1C2FF85C90F4032286E6D4&yid=1833A6AA51F779C1&vid=0B39A22176CE99FB&iid=0B39A22176CE99FB&sid=2922B27A3177030F&eid=04445C1D2BDA24EE&journal_id=1006-7191&journal_name=金属学报(英文版)&referenced_num=0&reference_num=9