%0 Journal Article
%T EFFECT OF Mg AND Zr ADDITION ON CREEP CRACK GROWTH BEHAVIOUR OF A Ni-BASE SUPERALLOY<br>少量Mg和Zr对一种Ni-Cr-Ti型变形合金蠕变裂纹长大行为的影响
%A GUO Encai
%A XU Fengqin Central Iron
%A Steel Research Institute
%A Ministry Metallurgical Industry Beijing
%A <br>郭恩才
%A 徐凤琴
%J 金属学报
%D 1988
%I 
%X 采用电位法测定单边切口试样700℃下的蠕变裂纹生长,并测定裂纹起始寿命和断裂寿命(t_(rc)和t_r)。用能量率积分(C~*)描述稳态蠕变条件下裂纹顶端附近的场。给出裂纹长大速率与C~*的函数关系,预报的裂纹起始时间与实测值相符。发现合金中加入少量Mg和Zr可以大大延长蠕变裂纹起始寿命和蠕变断裂寿命。
%K Ni-base alloy
%K Mg
%K Zr
%K creep crack growth rate<br>镍基合金
%K Mg
%K Zr
%K 蠕变裂纹长大速率
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=E447F6BCA2635BCD8ADC33456E8ED1F3&yid=0702FE8EC3581E51&vid=B91E8C6D6FE990DB&iid=94C357A881DFC066&sid=2E41258BCB9A7DB2&eid=965F4E89CD0AFC30&journal_id=0412-1961&journal_name=金属学报&referenced_num=1&reference_num=1