Transactions of Materials and Heat Treatment

Title：Simulation and experimental study on interface healing behavior of 316 stainless steel construction forming under electric shock pretreatment

Authors： Yang Zhenyu1 2 Han Tian1 2 Deng Jiadong1 2 3 Qian Dongsheng2 3

Unit： (1.School of Automotive Engineering Wuhan University of Technology Wuhan 430070 China 2.Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Wuhan 430070 China 3.Hubei Engineering Research Center for Green Precision Material Forming Wuhan University of Technology Wuhan 430070 China)

KeyWords： electric shock current density construction forming interface healing 316 stainless steel

ClassificationCode：TG306

year,vol(issue):pagenumber：2024,49(9):138-145

Abstract：

In order to ensure the high-quality connection of construction interface, a method of adding electrical shock pretreatment on the basis of high-temperature deformation controling interface healing was proposed to promote the healing of construction interface. Then, by simulations and experiments on the electrical shock pretreatment before high-temperature deformation of 316 stainless steel, the influence of electrical shock pretreatment on the degree of construction interface healing was revealed. The research results show that increasing the current density during electrical shock pretreatment gradually improves the construction interface healing effect of formed sample. However, when selecting the current density for electrical shock pretreatment should not be excessively high. The key is to achieve a greater degree of temperature gradient change at the construction interface and generate thermal compressive stress towards the center, which could promote local pre-connection at the construction interface.

Funds：

基金项目:国家重点研发计划（2018YFA0702900）；国家自然科学基金青年科学基金资助项目（51805391）；高等学校学科创新引智计划（B17034）：教育部创新团队发展计划（IRT_17R83）；湖北省科技创新人才及服务专项（2022EJD012）

作者简介：杨桢宇(2000-),男，硕士研究生 E-mail：491805611@qq.com 通信作者：邓加东（1988-），男，博士，副教授 E-mail：dengjd@whut.edu.com

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