锻压技术

基于实际工况的大长径比筒型锻件非均匀热处理过程宏微观耦合数值模拟

英文标题：Numerical simulation on macro-micro coupling of non-uniform heat treatment process for cylindrical forgings with large length-diameter ratio based on actual working condition

作者：李峰诚翟鹏远樊朋煜

单位：中国兵器工业新技术推广研究所

关键词：大长径比筒型锻件非均匀热处理碳化物多物理场变化

分类号：TG156

出版年,卷(期):页码：2025,50(3):102-111

摘要：

通过JMatPro软件确定了40CrNi4Mo1V钢和其各相的材料特性参数，并通过Deform有限元软件模拟了该材料制备的大长径比筒形锻件在基于实际工况下的非均匀热处理过程，计算结果成功预测了筒形锻件温度场、组织场和应力-应变场的变化趋势，揭示了多种碳化物的溶解析出规律。结果发现，在非均匀热处理过程下，大长径比筒形锻件变截面与首尾端处更易产生应力集中现象，且锻件尾部会有明显塑性弯曲，最大平均应力可达150 MPa以上；在淬火后，锻件残余奥氏体含量可降至091%，马氏体含量增至984%；此外，锻件回火温度越高，碳化物析越快，相同时间内锻件硬度越高。

The material characteristic parameters of 40CrNi4Mo1V steel and its phases were determined by software JMatPro, and the non-uniform heat treatment process of cylindrical forgings with large length-diameter ratio prepared by the material was simulated by finite element software Deform based on the actual working condition. Then, the calculation results predicted the temperature field, microstructure field and stress-strain field of the cylindrical forgings successfully, and the dissolution and precipitation laws of various carbides were revealed. The results show that under the non-uniform heat treatment process, stress concentration phenomenon is more likely to occur at the variable cross-section and the head and tail ends of cylindrical forgings with large length-diameter ratio, there is obvious plastic bending at the tail of forgings, and the maximum average stress reaches more than 150 MPa. After quenching, the residual austenite content of forgings is reduced to 091%, and the martensite content is increased to 984%. In addition, when the tempering temperature of forgings is higher, the carbide precipitation is faster, and the hardness of forgings is higher at the same time.

基金项目：

国防基础科研计划（JCKY2022208A002）

作者简介：李峰诚（1997-），男，硕士，工程师 E-mail：lifengcheng2012@163.com 通信作者：翟鹏远（1989-），男，硕士，高级工程师 E-mail：zhaipy@gfcn.cn

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