金属学报  1994, Vol. 30 Issue (9): 385-393

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Fe-C合金贝氏体铁素体的相变基元与类马氏体形貌贝氏体的形成

俞德刚;朱钰如;陈大军;唐晓宏;张惠娟

上海交通大学

BAINITIC TRANSFORMATION UNITS AND FORMATION OF MARTENSITE-LIKE BAINITE IN Fe-C ALLOYS

YU Degang; ZHU Yuru; CHEN Dajun; TANG Xiaohong; ZHANG Huijuan(Shanghai Jiaotong University)(Manuscript received 6 January;1994; in revised form 23 May; 1994)

俞德刚;朱钰如;陈大军;唐晓宏;张惠娟. Fe-C合金贝氏体铁素体的相变基元与类马氏体形貌贝氏体的形成[J]. 金属学报, 1994, 30(9): 385-393.
, , , , . BAINITIC TRANSFORMATION UNITS AND FORMATION OF MARTENSITE-LIKE BAINITE IN Fe-C ALLOYS[J]. Acta Metall Sin, 1994, 30(9): 385-393.

摘要 参考文献 相关文章 Metrics 全文: PDF(700 KB)   摘要: 本文从多方面研究观察再次证实贝氏体铁素体相变基元的存在，相变基元为切变相变基元，并提出其形态示意图。在Ｆｅ－Ｃ合金中，本文观察到正三角型、交叉型、“Ｎ”型和蝴蝶型类马氏体形貌贝氏体。在交叉型贝氏体中，发现基元相对滑移的、相互脱节的、形成“束腰”的和互换生长取向的交叉型贝氏体，交叉效应直接体现于相变基元的活动行为，相应提出其活动行为示意图。导致交叉的应力场是切变相变剪切应力集中应力场，贝氏体交叉的形成是切变应力－应变诱发贝氏体转变的结果。在应变诱发贝氏体转变时，相变驱动力的补偿与奥氏体所发生的真实应变的平方成正比，两贝氏体铁素体碰撞非常猛烈，承认其形成方式为切变型可得到说明。 关键词 ： 相变基元,  类马氏体形貌贝氏体,  Ｆｅ－Ｃ合金     Abstract：The occurrence of bainitic ferrite transformation units, namely, shear transformation units,in Fe-C alloys was repeatedly confirmed by various observations,and a sketch illustrating their morphology was given.Some martensite-like bainites,such as regular triangular, crossed,"N"- and butterfly-type,were observed in the alloys. The crossed bainite may be further divided into 4 types,i.e.,units of relative glide disjunction,"wasp- waist"formation and exchange growing orientation.The crossing effect reflects directly on movement of bainite units during transformation.The induced crossed stress field is one of the shear stress concentration under shear transformation.The formation of bainite crossing is caused in the shear stress-strain induced bainitic transformation.The compensation value for the driving force of transformation is proportional to the square of true strain of austenite.The extraordinal violence of impingement brought about by the growing bainite plates can only be explained through shear mechanism of bainitic transformation.Correspondent: YU Degang, professor,(Departrnent of Materials Science, Shanghai Jiaotong University,Shanghai 200030) Key words： transformation unit    martensite-like bainite    Fe-C alloy 收稿日期: 1994-09-18      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 俞德刚 朱钰如 陈大军 唐晓宏 张惠娟 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1994/V30/I9/385 1OblackJM,HehemannRF．TransformationandHardenabilityinSteels．ClimaxMolybdenum、AnnArbor,MI,1969:152OhmoriY,OhtaniH,KunitakeT．TransIronSteelInstJpn,1971;11:2503BhadcshiaHKDH,EdmondsDV．ActaMetall．1980;28:12654俞德刚,陈大军,郑经,何忆蓉,沈甫法,金属学报,1988;24:A3795SpanosG,FangHS,AaronsonHI．MetallTrans,1990;21A:l3816SandvikBPJ．MetallTrans．1982;13A:7777AaronsonHI．MetallTrans．1986;17A:10958WollantsP,BonteMDe,RoosIR．ZMetallk,1979;70:113 [1] 高翱 王强 李德军 柴海山 赵立佳 赫冀成. 电磁出钢系统中Fe-C合金的状态研究[J]. 金属学报, 2011, 47(2): 219-223. [2] 韩志强; 柳百成 . 垂直定向凝固条件下通道偏析形成过程的数值模拟[J]. 金属学报, 2003, 39(2): 140-144 . [3] 滕新营; 刘含莲; 石志强; 王焕荣; 闵光辉; 叶以富 . 0.40%Ce对共晶Fe-C合金液态结构的影响[J]. 金属学报, 2001, 37(9): 907-910 . [4] 曹志强;张丽萍;任忠鸣;金俊泽. 电磁搅拌对灰铸铁宏观偏析的影响[J]. 金属学报, 1992, 28(2): 82-85. [5] 杨柳;方鸿生;孟至和. Fe-C-Mn-B合金奥氏体等温分解动力学及Mn的再分配[J]. 金属学报, 1992, 28(1): 16-20. [6] 王世道;俞德刚. Fe-C合金贝氏体相变热力学研究[J]. 金属学报, 1989, 25(4): 23-29. [7] 俞德刚;陈大军;郑经纮;何忆蓉;沈甫法. 低中碳合金钢贝氏体铁素体的相变基元及其表面浮雕[J]. 金属学报, 1988, 24(6): 379-385. Viewed Full text Abstract Cited   Shared      Discussed