Element diffusion model with variable coefficient in bimetallic bonding process

被引:22
|
作者
Sun, C. Y. [1 ,2 ]
Cong, Y. P. [1 ,2 ]
Zhang, Q. D. [1 ,2 ]
Fu, M. W. [3 ]
Li, L. [1 ,2 ]
机构
[1] Univ Sci & Technol Beijing, Sch Mech Engn, Beijing, Peoples R China
[2] Beijing Key Lab Lightweight Met Forming, Beijing, Peoples R China
[3] Hong Kong Polytech Univ, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China
基金
中国国家自然科学基金;
关键词
Bimetallic materials; Element diffusion; Bonding; Transition zone; Diffusion model; HOT DEFORMATION; STAINLESS-STEEL; INTERFACE; ALLOY; MICROSTRUCTURE; EXTRUSION; BEHAVIOR;
D O I
10.1016/j.jmatprotec.2017.10.045
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The bimetallic bonding mechanisms including macroscopic deformation, microstructure evolution and element diffusion were investigated by using bimetallic hot compression tests of X65/316L. An element concentration diffusion model with a variable coefficient was proposed to determine the element concentration in the metallurgical bonding transition zone (MBTZ). Diffusion distance, strain, deformation temperature and holding time were taken into account in the model. A finite element model of the clad pipes hot extrusion process to investigate the element diffusion behavior in the MBTZ was developed by the proposed diffusion model. The concentration predicted by the proposed model have a good agreement with the experimental results and the proposed model is more accurate than the reference model.
引用
收藏
页码:99 / 108
页数:10
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