%0 Journal Article
%T MOLECULAR DYNAMICS SIMULATION ON MARTENSITIC NUCLEATION AND GROWTH AT AN EDGE DISLOCATION DIPOLE<br>马氏体在位错偶上形核长大的分子动力学模拟研究
%A LI Bin
%A ZHANG Xiumu
%A LI Rong
%A LI Yiyi
%A <br>李斌
%A 张修睦
%A 李蓉
%A 李依依
%J 金属学报
%D 1998
%I 
%X Molecular dynamics simulation has been performed to investigate martensite nucleation and growth at an edge dislocation dipole employing embedded atom method (EAM) type interatomic potential. The results indicate that the stress field of the dislocation dipole has important effect on the martensite nucleation and growth. The calculation of the stress distribution of the dislocation dipole shows that martensitic nucleation was preferentially initiated at the sites in the stress field where the stress state assists the lattice deformation of martensitic transformation. The two dislocations moved apart gradually, driven by transformation strain during the growing process of the martensite. The slip of the dislocation plays a role of plastic accommodation.
%K molecular dynamics simulation
%K edge dislocation dipole
%K EAM potential
%K martensitic nucleation and growth
%K stress field<br>马氏体相变
%K 位错偶
%K 分子动力学
%K 嵌入原子势
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=ECDC9ECCF881A3E3F4E52E9408767DA0&yid=8CAA3A429E3EA654&vid=339D79302DF62549&iid=5D311CA918CA9A03&sid=FCB110411B6339D8&eid=F2947E14627CD734&journal_id=0412-1961&journal_name=金属学报&referenced_num=1&reference_num=5