TRIP钢的马氏体相变晶体学研究  

On martensite transformation crystallography in TRIP steels

作　　者：张礼刚[1] 胡金江[1] 马丽红[1] 何文辰[2] 

机构地区：[1]河北建筑工程学院数理系,河北张家口075024 [2]河北工业大学理学院,天津300401

出　　处：《河北工业大学学报》2013年第2期71-75,共5页Journal of Hebei University of Technology

基　　金：河北省科学技术研究与发展计划(09215134);河北省教育厅科技支撑项目(z2012175);张家口市2011年科学技术研究与发展指导计划(1101009B)

摘　　要：TRIP钢是一种新型汽车工业用钢,在受到撞击时,在受力点钢中奥氏体将转变为马氏体,相变并向远处传递,从而获得高硬度和高塑性;采用Bowles-Mackenzie理论研究了Fe-1.67Mn-1.19Si TRIP钢中马氏体相变,对(11 0)切变面上[10 1]切变方向的马氏体相变进行了计算,获得了直线不变矩阵、惯习面、总体形变量等晶体学参数;所得参数与采用O点阵理论计算所得参数基本一致,相变前后对应晶面和晶向与Kurdjumov-Saches关系相比较,发现对应晶面间夹角为2.5°,晶向间夹角为6.2°,与K-S关系有较大偏差.TRIP steel is a new automobile industry steel.By the impact,austenite of the steel would be transformed into matensize on the stress point;at the same time,the phase transition would transfer around the austenite,thereby obtaining a high hardness and high plasticity.The martensitic transformation in Fe-1.67Mn-1.19SiTRIP steel was studied by the Bowles-Mackenzie theory.By calculating the parameter of martensite on the shear direction in the shear surface(1 0),the Linear constant matrix,the habit plane,overall etc.were obtained.The parameter are consistent with the calculated result by the O lattice theory.The relationship of crystal surface and oriention before and after transformation is compared with Kurdjumov-Saches relationship and find that the angle between the corresponding crystal planes is and one between the corresponding crystal orientation is 6.2° which are different with K-S relationship.

关 键 词：TRIP钢 B-M理论 不变线矢 惯习面 不变法矢 

分 类 号：TG142.24[一般工业技术—材料科学与工程]