铌微合金钢形变诱导相变的上限温度  

Upper Limit Temperature of Deformation Induced Transformation of Nb Microalloyed Steels

作　　者：刘嵩韬[1] 马铮[1] 杜林秀[1] 刘相华[1] 王国栋[1] 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110004

出　　处：《钢铁研究学报》2006年第6期38-41,共4页Journal of Iron and Steel Research

基　　金：国家重点基础研究发展规划"973"资助项目(G1998061509);国家高技术研究发展计划(863)资助项目

摘　　要：在Gleeble 1500热模拟实验机上进行单道次压缩实验,通过改变变形量以及变形后立即淬火的方法,研究了应变量对微合金钢形变诱导相变上限温度Ad3的影响。还通过不同温度的奥氏体化,研究了铌对微合金钢形变诱导相变上限温度Ad3的影响。结果表明,Ad3随应变量的增大而升高,并且当应变量较大时,Ad3趋于不变;铌对形变诱导相变有强烈的促进作用。The factors influencing on upper limited temperature of deformation induced transformation in microalloyed steels were investigated by the single-pass compression test with thermal simulator Gleeble 1500. Specimens austenized at different temperatures were deformed with different strains and quenched immediately after deformation. Results indicate that Ad3 rises with increasing the strain and Nb content can promote deformation induced transformation greatly.

关 键 词：微合金钢 形变诱导相变 铌 变形量 变形速率 

分 类 号：TG331[金属学及工艺—金属压力加工]