Element diffusion model with variable coefficient in bimetallic bonding process

C. Y. Sun, Y. P. Cong, Q. D. Zhang, Mingwang Fu, L. Li

Research output: Journal article publicationJournal articleAcademic researchpeer-review

17 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)99-108
Number of pages10
JournalJournal of Materials Processing Technology
Publication statusPublished - 1 Mar 2018


  • Bimetallic materials
  • Bonding
  • Diffusion model
  • Element diffusion
  • Transition zone

ASJC Scopus subject areas

  • Ceramics and Composites
  • Computer Science Applications
  • Metals and Alloys
  • Industrial and Manufacturing Engineering


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