%0 Journal Article
%T CORROSION FATIGUE CRACK PROPAGATION OF MARTENSITIC AND BAINITIC GC-4 ULTRA-HIGH STRENGTH STEEL<br>马氏体与贝氏体组织GC—4超高强度钢的腐蚀疲劳裂纹扩展
%A LIU Xiaokun
%A WANG Jianjun
%A LU Minxu
%A JIN Shi
%A FU Xiangjiong Xi''''an Petroleum Institute Northwestern Polytechnical University
%A Xi''''an
%A <br>刘晓坤
%A 王建军
%A 路民旭
%A 金石
%A 傅祥炯
%J 金属学报
%D 1993
%I 
%X The property and mechanism of corrosion fatigue (CF) crack propagation ofmartensitic and bainitic 40CrMnSiMoVA (GC-4) ultra-high strength steel was investigated.There is a platform region on CF crack propagation curve of the GC-4 steel with differentmicrostructure in 3.5% NaCl solution, which is similar to its stress corrosion crackingbehaviour. The CF crack propagation rate (in platform region) of martensitic GC-4 steel ismuch higher than that of bainitic one. Through fracture surface examination and theoreticalanalysis, it is revealed that hydrogen embrittlement plays an important role in the CF pro-cess of GC-4 steel.
%K martensite
%K bainite
%K corrosion fatigue
%K crack propagation rate
%K hydrogen embrittlement
%K steel 40CrMnSiMoVA
%K steel GC-4<br>腐蚀疲劳
%K 裂纹扩展
%K 超高强度钢
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=8BCA80FB41BE7624756C1FD2D1882FBB&yid=D418FDC97F7C2EBA&vid=771469D9D58C34FF&iid=59906B3B2830C2C5&sid=DB817633AA4F79B9&eid=27746BCEEE58E9DC&journal_id=0412-1961&journal_name=金属学报&referenced_num=2&reference_num=9