Acta Metall Sin  1998, Vol. 34 Issue (8): 813-818    DOI:

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MOLECULAR DYNAMICS SIMULATION ON MARTENSITIC NUCLEATION AND GROWTH AT AN EDGE DISLOCATION DIPOLE

LI Bin; ZHANG Xiumu; LI Rong; LI Yiyi(Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110015)Correspondent: ZHANG Xiumu; professor Tel: (024)22843531-55362; Fax: (024)23891320;E-mail: xmzhang imr. ac. cn

LI Bin; ZHANG Xiumu; LI Rong; LI Yiyi(Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110015)Correspondent: ZHANG Xiumu; professor Tel: (024)22843531-55362; Fax: (024)23891320;E-mail: xmzhang imr. ac. cn. MOLECULAR DYNAMICS SIMULATION ON MARTENSITIC NUCLEATION AND GROWTH AT AN EDGE DISLOCATION DIPOLE. Acta Metall Sin, 1998, 34(8): 813-818.

Abstract References Related Articles Recommended Metrics Download:  PDF(545KB)  Export:  BibTeX | EndNote (RIS)       Abstract  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. Key words:  molecular dynamics simulation      edge dislocation dipole      EAM potential      martensitic nucleation and growth      stress field      Received:  18 August 1998      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1998/V34/I8/813 1 Magee C L. Metall Trans, 1971; 2: 2419 2 Clapp P C. Phys Status Solid. 1973; 57(B): 561 3 Olson G B, Cohen M. Metall Trans, 1976; 7A: 1897, 1905, 1915 4 Kajiwara S. Metall Trans, 1986; 17A: 1701 5 Easterlillg K E, Tholen A R. Acta Metall, 1976; 24: 333 6 Daw M S, Baskes M I. Phys Rev Lett, 1983; 50: 1285 7 Daw M S, Baskes M I. Phys Rev, 1984; 29B: 6443 8 Chen S P, Scrolovitz D J, Voter A F. J Mater Res, 1989; 4: 62 9 Clapp P C, Rifkin J. Mat Res Soc Proc, 1984; 21: 643 10 Yu Z Z, Clapp P C. 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