锻压技术

电辅助不锈钢/碳钢异速轧制复合变形行为

英文标题：Composite deformation behavior of electrically assisted asymmetrical rolling for stainless steel/carbon steel

作者：相博洋1 2 阮金华1 2 张力升1 2 龙鼎1 2

分类号：TG335.81

出版年,卷(期):页码：2024,49(11):55-61

摘要：

为提高不锈钢/碳钢轧制复合界面结合强度，采用电辅助异速轧制工艺增强不锈钢/碳钢复合面剪切变形。针对不锈钢/碳钢电辅助异速轧制复合过程中的剪切变形细节，采用有限元法模拟了不同异速比下电辅助不锈钢/碳钢异速轧制复合过程，对温度场、等效应变速率、电流密度分布、表面速度、剪切应变进行了分析。结果显示：电辅助异速轧制增加了两轧件的速度差，施加异速比可以调节变形区的速度差并引入搓轧区，可显著提高复合面的总剪切应变，尤其是不锈钢侧；随着异速比的减小，变形越深入至轧件复合面，其产生的总剪切应变增加，可为不锈钢/碳钢轧制复合工艺研究及新工艺开发提供理论指导。

To improve the bonding strength of rolling composite interface for stainless steel/carbon steel, the shear deformation of stainless steel/carbon steel composite surface was enhanced by electrically assisted asymmetrical rolling process. In light of the shear deformation detail of stainless steel/carbon steel in the electrically assisted asymmetrical rolling process, the composite process of electrically assisted asymmetrical rolling for stainless steel/carbon steel with different asymmetrical ratios was simulated by finite element method, and the temperature field, equivalent strain rate, current density distribution, surface velocity and shear strain were analyzed. The results show that the speed difference of two rolled parts is increased by electrically assisted a symmetrical rolling, and the total shear strain of composite surface, especially the stainless steel side, can be significantly increased by applying the asymmetrical ratio to adjust the speed difference in the deformation zone and introduce the rolling zone. With the decreasing of asymmetrical ratio,the deformation goes deeper into the composite surface of rolled piece, and the total shear strain is increased,which provides the theoretical guidance for the research of stainless steel/carbon steel rolling composite process and the development of new technology.

基金项目：

国家自然科学基金资助项目（51701145）

作者简介：相博洋（1998-），男，硕士研究生 E-mail：xby981212@icloud.com 通信作者：阮金华（1985-），男，博士，副教授 E-mail：Ruan_Jinhua@wust.edu.cn

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