Transactions of Materials and Heat Treatment

Title：Hot deformation behavior and establishment of constitutive model for H13 die steel

Authors： Guo Chengxiang1 2 Wang Jiachang3 Zhang Minglei3 Zhang Song1 2

Unit： 1.Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education School of Mechanical Engineering Shandong University 2.National Experiment Education Demonstration Center for Mechanical Engineering Shandong University 3.Qingdao Hisense Mould Co. Ltd.

KeyWords： H13 die steel hot deformation flow stress Arrhenius model BP-ANN model

ClassificationCode：TG142.1

year,vol(issue):pagenumber：2024,49(10):221-229

Abstract：

In order to improve the hot working performance and optimize the hot forming process parameters for H13 die steel. the hot deformation behavior of H13 die steel under different strain rates, deformation temperatures and true strain ranges was studied by thermal simulation tester Gleeble-3800, and two kinds of constitutive model such as Arrhenius with strain compensation and BP-ANN were established to describe the flow behavior of H13 die steel. The results show that the flow stress decreases with the decreasing of strain rate and the increasing of deformation temperature. By comparing the prediction ability of two established constitutive models, it is found that the correlation coefficients of Arrhenius model and BP-ANN model are 0.99536 and 0.99952,the average relative errors are 3.58% and 1.23%, and the average absolute errors are 4.45641 and 1.37732, respectively. The BP-ANN model has better accuracy and stability in predicting the high-temperature flow stress of H13 die steel.

Funds：

青岛市科技计划(24-1-2-qljh-10-gx);山东省泰山学者工程专项(ts201712002)

作者简介：呙程祥（1997-），男，硕士研究生,E-mail：202234368@mail.sdu.edu.cn;通信作者：张松（1969-），男，博士，教授,E-mail：zhangsong@sdu.edu.cn

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