Transactions of Materials and Heat Treatment

Title：Constitutive model of Cu-Sn alloy based on friction and temperature rise correction

Authors： Yu Yiwen Cai Jun Li Chongchong Li Qingyang Li Yang Qiang Fengming

Unit： National and Local Joint Engineering Research Center for Functional Materials Processing College of Metallurgical Engineering Xi′an University of Architecture and Technology

KeyWords： Cu-Sn alloy hot compression high temperature deformation Johnson-Cook constructive model friction correction

ClassificationCode：TG146.1+1

year,vol(issue):pagenumber：2024,49(11):182-188

Abstract：

The hot compression tests for Cu-Sn alloy in the condition of the deformation temperature of 823-973 K and the strain rate of 0.001-10 s-1 were carried out by thermal simulation tester Gleeble-3800. Then, considering the bulging phenomenon caused by friction and the influence of friction heat and deformation heat, the test results were modified, and the modified Johnson-Cook constitutive model for the material was established. The results show that the flow stress of Cu-Sn alloy is sensitive to strain rate and deformation temperature and the stress-strain curve shows the characteristics of dynamic recrystallization curve. The accuracy of the modified Johnson-Cook constitutive model is verified, and the values of correlation coefficient R and average absolute relative error AARE between the predicted value calculated by the modified Johnson-Cook constitutive model and the test value are 0.9848 and 7.936%, respectively, indicating that the constructed model can accurately predict the change of flow stress for Cu-Sn alloy.

Funds：

国家重点研发计划（2022YFB3804001）；国家自然科学基金资助项目（52374400）；陕西省教育厅产业化项目（21JC020）

作者简介：鱼祎雯（2001-），女，硕士研究生 E-mail：1273122940@qq.com 通信作者：强凤鸣（1992-），女，博士，讲师 E-mail：qiangfengming@126.com

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