非对称循环弯曲变形再结晶组织的Monte Carlo模拟  

Monte Carlo simulation of recrystallized microstructure during asymmetric cyclic bending deformation

作　　者：周顺 李立新[1] 李均禹 彭洲 苏严 ZHOU Shun;LI Lixin;LI Junyu;PENG Zhou;SU Yan(Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北武汉430081

出　　处：《武汉科技大学学报》2024年第5期339-346,共8页Journal of Wuhan University of Science and Technology

基　　金：武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室基金(FMRU2007Y01).

摘　　要：利用Monte Carlo方法模拟了非对称循环弯曲变形工艺下的静态再结晶过程,分析了循环道次、退火温度等工艺参数对板材表面及厚度方向上组织演变和晶粒尺寸分布的影响,并基于模拟数据,建立了静态再结晶晶粒尺寸预测模型。结果表明,在450~750℃的退火温度范围内,随着循环道次增加、退火温度升高以及与板材表面距离的减小,静态再结晶晶粒尺寸显著减小。当达到7个循环道次后,板材表面的晶粒尺寸趋于稳定;而在11个循环道次后,厚度方向的晶粒尺寸均匀化,并细化为等轴晶。此外,通过将模拟结果和金相实验得到的再结晶晶粒尺寸进行对比,模型的预测结果和实验数据吻合度高,所建模型的有效性和准确性得到验证。The Monte Carlo method was employed to simulate the static recrystallization process under asymmetric cyclic bending deformation,and the effects of cyclic pass and annealing temperature on the microstructural evolution and grain size distribution across the surface and through the thickness of the plate were investigated.A predictive model for static recrystallization grain size was developed based on the simulation data.The results indicate that within an annealing temperature range of 450 to 750°C,the static recrystallization grain size decreases with an increase in cyclic pass,higher annealing temperature,and proximity to the plate surface.After 7 cyclic passes,the grain size on the plate surface stabilizes,while after 11 cycles,the grain size along the thickness direction becomes uniform and refines into equiaxed grains.By comparing the model predictions with metallographic experimental results of recrystallized grain sizes,the feasibility and high accuracy of the established model has been confirmed.

关 键 词：非对称弯曲变形 静态再结晶 循环道次 MONTECARLO模拟 晶粒尺寸 

分 类 号：TG111.7[金属学及工艺—物理冶金]