Metal

Deformation (meteorology)

Process (computing)

Engineering

Metallurgy

Materials science

Operating system

Variable (mathematics)

Computer science

Diffusion bonding

Thermodynamics

Physics

Finite element method

Diffusion

Mathematics

Bimetallic strip

Microstructure

Diffusion process

Mathematical analysis

Composite material

Innovation diffusion

Structural engineering

Knowledge management

Mechanics

Extrusion

Journal of Materials Processing Technology

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.

Element diffusion model with variable coefficient in bimetallic bonding process