%0 Journal Article
%T HYDROGEN--INDUCED DELAYED FRACTURE IN TiNi<br>TiNi形状记忆合金的氢致滞后断裂
%A HE Jianying
%A GAO Kewei
%A SU Yanjing
%A QIAO Lijie
%A CHU Wuyang
%A <br>何健英
%A 高克玮
%A 宿彦京
%A 乔利杰
%A 褚武扬
%J 金属学报
%D 2004
%I 
%X Hydrogen-induced delayed fracture during dynamic charging of TiNi shape memory alloy, and the role of atomic hydrogen, hydrogen-induced martensite and hydride in hydrogen-induced delayed fracture have been investigated. The results show that hydrogen-induced delayed fracture in TiNi alloy could occur, and the normalized threshold stress intensity factor decreased linearly with increasing the total hydrogen concentration, i.e., KIH/KIC=2.01-0.25 LnCT. The content of hydride increased continuously during dynamic charging, and the fracture toughness of the TiNi alloy decreased gradually, which is the main cause of hydrogen-induced delayed fracture. The role of atomic hydrogen and hydrogen-induced martensite in hydrogen-induced delayed fracture was very small.
%K TiNi shape memory alloy
%K hydrogen-induced delayed fracture
%K atomic hydrogen
%K hydride
%K hydrogen-induced martensite<br>TiNi
%K 氢致滞后断裂
%K 原子氢
%K 氢化物
%K 氢致马氏体
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=5EF092011DA36C2A&yid=D0E58B75BFD8E51C&vid=1371F55DA51B6E64&iid=E158A972A605785F&sid=556C1A86E372B606&eid=C7DDDE86E6286CD9&journal_id=0412-1961&journal_name=金属学报&referenced_num=0&reference_num=14