微合金化H型钢轧后空冷的温度场及组织和性能  

Temperature Field of Microalloyed H Beam After Hot Rolling and Its Influence on Microstructure and Mechanical Performance

作　　者：程鼎[1,2] 薛东妹[1] 潘涛[1] 张永权[1] 王恩睿[1] 

机构地区：[1]钢铁研究总院结构材料研究所,北京100081 [2]马钢股份有限公司H型钢厂,安徽马鞍山243000

出　　处：《钢铁研究学报》2009年第7期33-36,共4页Journal of Iron and Steel Research

摘　　要：采用ANSYS/LS-DYNA商用数值模拟计算软件分析了H型钢轧后空冷的温度场,并在此基础上研究了不同温度场下H型钢不同部位的显微组织和力学性能。结果表明,与翼缘1/4、1/2处和腹板相比,H型钢截面R处的冷却速度最小。在冷却速度影响下,H型钢不同部位的显微组织不同。冷却速度越小,最终的铁素体晶粒越粗大,强度和冲击功越低。Using ANSYS/LS DYNA commercial software, the analysis of temperature field of air-cooled H beam after hot rolling was made. On the basis of numerical computation result of temperature distribution, the microstructures and mechanical properties of H beam at different cross-sectional positions were studied. The results showed that the cooling rate at R position was much lower than that at 1/4 flange, 1/2 flange and sternum, which had an important effect on the microstructures of H beam at different position. The lower the cooling rate, the coarser were the ultimate ferrite grains and the lower were the yield strength and impact energy.

关 键 词：H型钢 空冷 温度场 显微组织 力学性能 

分 类 号：TG113.1[金属学及工艺—物理冶金]