%0 Journal Article
%T EFFECTS OF HYDROGEN ATOMS OF INITIATION AND PROPAGATION OF CRACKS UNDER SLOW LOADING<br>慢加载条件下氢对裂纹萌生与扩展的作用
%A HAN Guangwei
%A <br>韩光炜
%A 宋余九
%J 金属学报
%D 1994
%I 
%X The effects of hydrogen atoms on crack initiation and propagation have been studied in normalized Cr-1Mo steel using in situ SEM tensile experiment. The results are found that the critical plastic deformation at notch root for initiation of ductile crack is reduced by charging hydrogen, and the crack propagation pattern is also changed from continuous growth on the plane of maximum shear stress to uncontinuous growth on maximum normal stress plane. Hydrogen induced plastic deformation has not been found, and the effect mechanisms of hydrogen atoms are analysized.
%K intergranular crack
%K dislocation transport hydrogen atoms
%K critical hydrogen atom density
%K Cr- 1Mo steel<br>铬钼钢
%K 氢
%K 裂纹萌生
%K 裂纹扩展
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=D1E4D064A8FF0CE78A798CDAC6133C46&yid=3EBE383EEA0A6494&vid=340AC2BF8E7AB4FD&iid=F3090AE9B60B7ED1&sid=A6683C8C0EB9BCA7&eid=30F3EEEA29E34EE7&journal_id=0412-1961&journal_name=金属学报&referenced_num=3&reference_num=2