Transactions of Materials and Heat Treatment

Title：Deformation behavior of surfacing welding bimetal in cold upsetting process

Authors： Hui Youke Wang Huajun Xie Bing Chen Wen

Unit： Wuhan University of Technology

KeyWords： surfacing welding bimetal PTA spray welding cold upsetting cladding layer microhardness

ClassificationCode：TG316

year,vol(issue):pagenumber：2017,42(10):1-4

Abstract：

The deformation behavior of surfacing welding bimetal under large plastic deformation was studied by the cold upsetting experiment, and the feasibility of forging surfacing welding bimetal was explored. Firstly, the bimetal billet was prepared by PTA spray welding, and the microhardness near the cladding layer of surfacing welding bimetal was measured to estimate the interfacial properties of surfacing welding bimetal. Then, the deformation and failure mode of surfacing welding bimetal in the cold upsetting process were investigated. The results show that the weakest microhardness region of surfacing welding bimetal appears near the fusion line, and the microhardness of cladding layer is much higher than that of substrate. Furthermore, in the cold upsetting process, the plastic deformation firstly occurs in the substrate region of surfacing welding bimetal, and the ability of cladding layer resisting deformation is higher than that of substrate. Therefore, when compression is up to a certain stage, the plastic deformation occurs at the bottom of the cladding layer, and the cladding layer region has the potential for plastic deformation.

Funds：

国家自然科学基金资助项目(51475346)

作者简介：惠有科(1991-)，男，硕士研究生，E-mail：youkeh@126.com;通讯作者：王华君(1970-)，男，博士，副教授，E-mail：wanghuajunhb@163.com

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