%0 Journal Article
%T THE SEM IN SITU OBSERVATION OF TENSILE FRACTURE PROCESSES IN PLAIN CARBON DUAL-PHASE STEELS<br>
%A SHEN Xianpu
%A LEI Tingquan
%A LIU Jianzhuang Harbin Institute of Technology
%A <br>
%J 金属学报
%D 1985
%I 
%X The dynamic microprocesses of fracture in martensite-ferrite dual-phase steelswere observed by the in situ technique in SEM equipped with tensile platform.The mechanism of crack nucleation has been clarified.The conditions of crack prop-agation and affecting factors have been discussed.It is believed that the propaga-tion of the microcracks depends on the combined effect of both tensile stress andplastic shear strain.The dislocation pile-up model can be successfully used for ex-plaining the effect of the volume fraction of martensite,the carbon content in itand the low temperature tempering on crack nucleation.Furthmore,the factorsaffecting the ductility of dual-phase steels were analyzed according to the specificfeatures of fracture processes.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=A10572BE68218E8C5A53A7C36420876B&yid=74E41645C164CD61&vid=659D3B06EBF534A7&iid=38B194292C032A66&sid=318E4CC20AED4940&eid=04445C1D2BDA24EE&journal_id=0412-1961&journal_name=金属学报&referenced_num=0&reference_num=1