热膨胀法在钢铁材料固态相变研究中的应用  

Application of dilatometry to phase transformation analysis of solid state in iron and steel

作　　者：王春芳[1] 路岩[1] 赵晓丽[1] 

机构地区：[1]钢铁研究总院中心实验室,北京100081

出　　处：《钢铁研究学报》2015年第11期1-7,共7页Journal of Iron and Steel Research

摘　　要：热膨胀法是通过测量金属材料热循环过程中线性应变与时间和温度的关系,来研究钢铁材料固态相变的一种实用的分析方法。简述了热膨胀实验基本原理、测量设备及实验分析方法,并结合实例对热膨胀法在钢铁材料连续加热相变(CHT)及动力学模型、连续冷却转变曲线(CCT)及等温转变曲线(TTT)等方面的应用进行了概述。Dilatometry is a powerful technique for phase transformation analysis of solid state in iron and steel by measuring linear strain as a function of time and temperature during thermal cycle. The basic fundamentals, equipment and experimental analysis method of dilatometric analysis were introduced. Several practical examples and applications of dilatometry in iron and steel research were briefly described, with an emphasis on continuous heating transformation （CHT） and kinetic model, continuous cooling transformation （CCT） diagram and time temperature transformation （TTT） diagram.

关 键 词：热膨胀法 奥氏体化 CHT CCT TTT 

分 类 号：TG115[金属学及工艺—物理冶金] TG111.5[金属学及工艺—金属学]