建筑用耐火钢组织和力学性能的研究  

Research on Microstructure and Mechanical Property of Refractory Steel

作　　者：杨晓敏[1] 

机构地区：[1]内蒙古建筑职业技术学院,内蒙古呼和浩特010050

出　　处：《热加工工艺》2016年第6期60-62,共3页Hot Working Technology

基　　金：内蒙古自治区高等学校科学研究项目(NJSZ1319)

摘　　要：以590RF耐火钢为研究对象,研究了轧制和回火处理对耐火钢组织和力学性能的影响。结果表明,轧制后试验钢的常温力学性能整体较好,而试验钢在600℃时的高温拉伸强度较低。回火热处理后,试验钢在600℃时的高温力学性能有了明显提高。轧制后,试验钢的金相显微组织中都存在着铁素体、珠光体和粒状的贝氏体,其晶粒都比较小。回火后在试验钢的组织中析出物的晶粒尺寸大约在几十个纳米,为Nb、Ti的化合物。Taking 590RF refractory steel as research object, the effects of rolling and tempering on the microstructure and mechanical properties of refractory steel were studied. The results show that the refractory steel after rolling has good mechanical properties at room temperature while the high temperature tensil strength at 600℃ is low. However, the mechanical properties at 600℃ improve a lot after tempering. There are ferrite, pearlite and granular bainite in the microstructure after rolling and the grain size is tiny. The grain size of the precipitates in the microstructure of the steel after tempering is dozens of nano particle, which is Nb and Ti compounds.

关 键 词：耐火钢 轧制 回火 力学性能 

分 类 号：TG156.3[金属学及工艺—热处理]