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.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2009年第7期33-36,共4页
Journal of Iron and Steel Research
关键词
H型钢
空冷
温度场
显微组织
力学性能
H beam
air cooled
temperature field
microstructure mechanical properties
