%0 Journal Article
%T HYDROGEN-FACILITAED DISLOCATION EMISSION,MOTION AND INITIATION OF HYDROGEN-INDUCED MICROCRACK IN RAIL STEEL<br>重轧钢中氢促进位错发射,运动以及氢致裂纹形核
%A HUANG Yizhong
%A WANG Yanbin
%A CHU Wugang MEI DongSheng
%A SU Shihuai
%A YU Mengwen
%A JI Kebing
%A <br>黄一中
%A 王燕斌
%A 褚武扬
%A 梅东生
%A 苏世怀
%A 俞梦文
%A 籍可宾
%J 金属学报
%D 1998
%I 
%X A special deflection device for TEM has designed and used to study the dislocation configuration change before and after recharging hydrogen. The relations among hydrogenfated microcrack initiation, dislocation motion and dislocation free zone (DFZ) were also studied. The results showed that hydrogen can promote dislocation emission and motion. When the dislocation emission and motion develop to a critical condition, hydrogen-facilitated microcrack will initiate in DFZ or at the top of the ored. This process is similar to that during tensile testing in the air.
%K TEM
%K hydrogen induced crack
%K dislocation emission and motion
%K rail steel<br>TEM
%K 氢致开裂
%K 位错发射
%K 重轨钢
%K 位错组态
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=5175C9D46105FE5D340D571454053BB6&yid=8CAA3A429E3EA654&vid=339D79302DF62549&iid=0B39A22176CE99FB&sid=03A030BB0C519C60&eid=B0EBA60720995721&journal_id=0412-1961&journal_name=金属学报&referenced_num=0&reference_num=14