钢轨钢热轧奥氏体动态再结晶研究  

DYNAMIC RECRYSTALLIZATION OF AUSTENITE IN RAIL STEEL DURING HOT ROLLING

作　　者：孙本荣[1] 朱晔[1] 曾秀珍[1] 赵林春[1] 张国柱[2] 张天绪[2] 翁绳厚 王秉义[2] 张慧生[2] 黄正琨 

机构地区：[1]钢铁研究总院 [2]包头钢铁稀土公司

出　　处：《钢铁》1991年第6期31-35,共5页Iron and Steel

摘　　要：利用热加工模拟试验机对碳素钢轨钢进行了动态再结晶试验。结果指出:钢轨钢热轧变形中存在着连续动态再结晶和间断动态再结晶,再结晶γ平均晶粒直径与变形Z参数具有良好的对应关系。回归方程为:利用万能轧机生产60kg/m钢轨时,在成品机架将发生明显地动态再结晶细化,有利于钢轨获得微细珠光体组织。Dynamic recrystallization experiments of carbon rail steel were carried out on Formastor-Press Simulator. The results show that both continuous and intermittent dynamic recrystallization exist during the deformation process. The mean recrystallization grain sizes and Z parameters conform to the following equation:D_r=1.53×10~5Z^(-0.304)When the universal mill is used to produce 60kg/m rail, the fining by dynamic recrystallization occurs obviously in the finishing mill. This is beneficial to get fine pearlite microstructure.

关 键 词：钢轨钢 热轧 奥氏体 再结晶 

分 类 号：TG111.7[金属学及工艺—物理冶金]