热模拟工艺参数对热轧双相钢中第二相粒子析出行为的影响  

Effects of Thermal Simulation Processing Parameters on Second-phase Particle Precipitation for Hot Rolled Dual-phase Steel

作　　者：孙成钱[1] 孟凡磊[1] 张红梅[1] 乔立峰[2] 

机构地区：[1]辽宁科技大学,辽宁鞍山114033 [2]鞍山钢铁公司,辽宁鞍山114006

出　　处：《热加工工艺》2012年第5期96-98,共3页Hot Working Technology

摘　　要：以含铌和钛热轧双相钢为研究对象,在热模拟机MMS-200上研究了变形量对该钢中第二相粒子析出行为的影响。通过显微组织观察发现,该钢呈现明显的双相特征,组织为铁素体和少量马氏体。随着变形量的增加,晶粒尺寸减小,第二相粒子尺寸明显减小且析出增多,分布比较弥散。尺寸大的粒子呈方形,含铌量多,含钛量少。Effects of reduction on the second-phase particle precipitation of the hot rolled dual-phase Nb and Ti-bearing steel were studied on MMS-200.It is found that the dual-phase steel displays clearly classic dual phase morphology which is ferrite and martensite by the observation of micro-structures.The grain sizes are smaller;the size of the second-phase particles is clear smaller and the quantity of the precipitated second-phase particles are increased and dis persed with the decrease of its dimensions.The size of larger particles is square and they contain higher Nb and lower Ti.

关 键 词：热模拟 热轧双相钢 第二相粒子 萃取复型 

分 类 号：TG335.5[金属学及工艺—金属压力加工]