%0 Journal Article
%T FRACTAL RESEARCH ON CRACKS PROPAGATION OF GAS PIPELINE X52 STEEL WELDING LINE UNDER HYDROGEN ENVIRONMENT
%A SHDong
%A YMLu
%A YZhang
%A QWu
%A <br>S.H. Dong
%A Y.M. Lu
%A Y. Zhang and Q. Wu
%J 金属学报(英文版)
%D 2001
%I 
%X Based on the theory of hydrogen enhanced localized plasticity of the hydrogen induced cracking and considered the effect of residual stress produced by eliminated stress heat treatment, a fractal model of hydrogen induced cinching was presented, and a relationship among the effective surface energy (H), fractal dimension D and stress intensity factor of hydrogen induced cracking, KIH, for welding pipeline under hydrogen environment was set up, from which the relationship of D and KISCC is obtained. The model was verified experimentally to be correct.
%K hydrogen environment
%K welding line
%K cracking
%K ductile
%K fractal
%K dimension<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=C19B08D052F5FD8445F4BB80A1A5D7BF&aid=24AA60BFDBBD5618BA2C672D59856563&yid=14E7EF987E4155E6&vid=F3583C8E78166B9E&iid=38B194292C032A66&sid=D5C73DEF4CF8FAF3&eid=6ED15D8DCB279BC4&journal_id=1006-7191&journal_name=金属学报(英文版)&referenced_num=0&reference_num=18