金属学报  1982, Vol. 18 Issue (3): 350-394

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钢中马氏体转变的位错滑移机制

林保军

内蒙古金属材料研究所

ON THE DISLOCATION SLIP MECHANISM OF THE MARTENSITIC TRANSFORMATION OF STEELS

Lin Baojun (Nei Monggol Institute of Metallic Materials; Baotou; Nei Monggol Autonomous Region)

林保军. 钢中马氏体转变的位错滑移机制[J]. 金属学报, 1982, 18(3): 350-394.
. ON THE DISLOCATION SLIP MECHANISM OF THE MARTENSITIC TRANSFORMATION OF STEELS[J]. Acta Metall Sin, 1982, 18(3): 350-394.

摘要 参考文献 相关文章 Metrics 全文: PDF(2480 KB)   摘要: 根据实验证据提出:在钢的马氏体转变过程中,fcc→bcc(或bct)晶格改组时所需的原子相对位置变化是通过畸变fcc奥氏体晶格内的偏位错运动实现的,其方式有两种:一种是偏位错沿(1/m)〈112〉_f/{111}_f中的一个滑移系运动导致的主剪切原子位移;另一种是不同共轭{111}_f滑移面内偏位错同时或先后开动联合造成的M=(1/n)[〈112〉_(f1)/{111}_1+〈112〉_(f2)/{111}_2]复合原子位移。由此出发提出了钢淬火时奥氏体向马氏体转变的偏位错滑移共轭复合原子位移机制,并按此机制对马氏体与奥氏体之间的位向关系,马氏体惯析面及淬火马氏体中的一些特有现象给出了晶体几何学的解释。 Abstract：With the aid of TEM observation on the martensite transformation of three steels, the relative position changes between atoms caused by the dislocation slip during fcc→bcc (or bet)lattice variation are mainly carried through shears in combination with different slip systems along<112>_f/{111}_f in the distorted fee lattice. Two types of these changes are: (1) the atom displacement of main shear only along one slip system of (1/m)<112>_f/{111}_f and (2)M=(1/n)[<112>_(f1)/{111}_(f1)+<112>_(f2)/{111}_(f2)] complex displacement obtained by all dislocations operated in different {111}_f conjugate sIip plane (n>6). Thus, an atom displacement mechanism of which the austenite transforms into martensite through conjugate complex slips of partial dislocation during quenching has been proposed. Based upon this mechanism, the crystalline geometry explanation may be undoubtedly made on the orientation correlation between matensite and austenite matrix, as well as the martensite habit planes and some special phenomena in quenched martensite. 收稿日期: 1982-03-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 林保军 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1982/V18/I3/350 1 西山善次,变態,(基本篇),丸善,东京,1972,p.16,282． 2 Fujita, F. E., Metall. Trans., 8A (1977) , 1727． 3 Narasimha Rao, B. V., Metall. Trans., 10A (1979) , 645． 4 Olson, G. B.; Cohen, M., Metall.Trans., 7A (1976) , 1905． 5 Narasimha Rao, B. V.; Thomas, G., 待发表. 6 Oshima, R.; Azuma, H.; Fujita, F. E., Scr. MetaIl, 10 (1976) , 1011． 7 Foos, M.; Frantz, C.; Gantois, M., Scr. Metall., 12 (1978) , 795． 8 Hausch, G., J. Phys. Soc. Jpn., 37 (1974) , 819, 824． 9 郭可信,林保军,物理学报,27(1978) ,729． 10 郭可信,林保军,物理学报,29(1980) ,494． 11 Howie, A.; Whelan, M. J., Proc R. Soc., London A267 (1962) , 206． 12 Howell, P. R.; Jones, A. R., J. Mater. Sci., 13 (1978) , 1803． 13 Whelan, M. J.; Hirsch, P. B., Philos. Mag., 2 (1957) , 1211, 1303． 14 Cornelis, I.; Oshima, R.; Tong, H. C.; Wayman, C. M., Scr. Metall., 8 (1974) , 133． 15 徐祖耀,马氏体相变与马氏体,科学出版社,北京,1980,p.99,376,403． 16 Shimizu, S.; Nishiyama, Z., Phase Transformation and Related Phenomenal in Steel, ASM, 1971, p. 1055． 17 Sarma, D. S.; Whiteman, J. A.; Woodhead, J. H., Met. Sci., 10 (1976) , 391． 18 Brook, R.; Entwisle, A. R,, J. Iron Steel Inst., 203 (1965) ,905． 19 Thomas, G., Metall. Trans., 2 (1971) , 2373． 20 Shimizu, K.; Oka, M.; Wayman, C. M., Acta Metall., 18 (1970) , 1005．d No related articles found! Viewed Full text Abstract Cited   Shared      Discussed