%0 Journal Article
%T TIME-DEPENDENT FATIGUE AND ITS MICROMECHANISM OF SUPERALLOY GH169 UNDER OXIDATION
%A HE Jinrui LU Younian WANG Qingsui SU Hansheng ZHANG Xueduo WU Mingchang ZHU Qiao Beijing Institute of Aeronautical Materials
%A Beijing
%A China P.O.No.—
%A Beijing
%A China
%J 金属学报(英文版)
%D 1990
%I 
%X The time-dependent fatigue and its micromechanism of superalloy GH169 at 650℃ have beenstudied.Under the same stress and duration,its cyclic life in Ar is shorter than that in air.Thedamage mechanism is mainly of the interaction between high temperature oxidation and fa-tigue.The fracture surface of GH169 specimen oxidized at 650℃ in air is revealed to be cov-ered with a dense and even oxide film,but in Ar,with uncontinuous oxide particles.As thetime prolonged,the Cr_2O_3 content in the surface oxides increases in air and decreases in Ar.
%K superalloy GH169
%K time-dependent fatigue
%K oxidation effect
%K creepfatigue-environment interaction<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=C19B08D052F5FD8445F4BB80A1A5D7BF&aid=7240C371B78FE9F0256503DD13F8425C&yid=8D39DA2CB9F38FD0&vid=38B194292C032A66&iid=94C357A881DFC066&sid=F7496043B4F12D75&eid=869B6F3117981EC4&journal_id=1006-7191&journal_name=金属学报(英文版)&referenced_num=0&reference_num=7