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为了准确预测HG-80钢的晶粒长大过程并调控其微观组织,在900～1200℃的保温温度和10～1200s的保温时间条件下,采用Gleeble-1500D型热模拟机对其进行等温保温实验,分析其晶粒长大过程,并基于实验数据建立了Burke-Turnbull晶粒长大动力学模型。通过二次开发将计算所得的Burke-Turnbull模型参数导入DIGIMU*软件中,从晶粒尺寸分布、晶粒生长动力学和晶粒拓扑结构等方面,基于Level Set方法建立了描述HG-80钢的晶粒长大模型并通过DIGIMU*软件进行仿真计算。结果表明:随着保温时间的增加,实验钢的晶粒尺寸明显增大,晶粒生长速率逐渐减小,呈抛物线状增长;为了验证Burke-Turnbull模型的准确性,将平均晶粒尺寸的模型预测值与实验值进行对比,相关系数R为0.991,表明该模型的准确性较高;通过Level Set方法仿真计算得出的晶粒形貌与实验结果吻合良好,证明该模型能有效预测不同热处理条件下HG-80钢的晶粒长大过程。
Abstract：In order to accurately predict the grain growth process of HG-80 steel and regulate its microstructure,isothermal holding experim entswere conducted using a Gleeble-1500D thermal simulator under the conditions of holding temperature of 900-1 200℃ and holdingtime of 10-1200 s.The grain growth process was analyzed,and a Burke Turnbull grain growth kinetics model wasestablished based on experimental data.Through secondary development,the calculated Burke-Turnbull model parameters were imported into DIGIMU* software.Considering factors such as grain size distribution,grain growth kinetics,and grain topology,a prediction model for graingrowth of the HG-80 steel was established based on the Level Set method,and simulation calculations were performed using DIGIMU* software.The results show that with the increase of holding time,the grain size of the experimental steel significantly increases,andthe grain growth rate gradually decreases,following a parabolic trend.In order to verify the accuracy of the Burke-Turnbull model,the model pre dicted values of the average grain size are compared with the experimental values,and the correlation coefficient R is 0.991,indicatingthat the accuracy of the model is high.The grain morphology obtained through Level Set simulation method is in good agreement with experimental results,proving that the model can effectively predict the grain growth process of the HG-80 steel under different heat treatment conditions.:HG-80 steel;Level Set method;grain growth;Burke-Turnbull model
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基本信息:
DOI：10.13289/j.issn.1009-6264.2024-0402
中图分类号:TG142.1
引用信息:
[1]刘铭阳,陈学文,周正,等.基于Level Set方法的HG-80钢晶粒长大模型的建模与仿真[J].材料热处理学报,2025,46(06):162-170.DOI:10.13289/j.issn.1009-6264.2024-0402.
基金信息:
国家自然科学基金(51575162); 国家重点研发计划资助项目(2020YFB2008400)
2025-06-21
2025-06-21