PanDiffusion: Diffusion simulation view documentations

PanDiffusion is a module of Pandat software designed to simulate elemental diffusion under a variety of conditions. PanDifffusion provides a rich variety of applications including diffusion couple, homogenization, carburization, decarburization, phase transformation, particle dissolution, and so on. The boundary condition and geometry of simulation can be easily set for applications. It is seamlessly integrated with the user-friendly Pandat Graphical User Interface (PanGUI) as well as the thermodynamic calculation engine, PanEngine. The implementation of PanEngine guarantees reliable input data, such as chemical potential, phase equilibrium and chemical mobility. Overall architecture of the PanDiffusion module is shown below. A combined thermodynamic database and mobility database is needed for diffusion simulation. PanDiffusion module needs a combined thermodynamic and mobility database to perform a meaningful simulation for a material system in question. Please refer to Databases for more information.

Basic Functionalities of PanDiffusion Module

  • Diffusion couple: composition profile of elements in the diffusion couple
  • Carburization: carburization under a variety of boundary conditions
  • Decarburization: carbon deplete in steel alloys
  • Particle dissolution: dissolution of precipitates to matrix phase
  • Phase transformation: transformation from one phase to the other
  • Homogenization: solution treatment

Featured Plots of PanDiffusion Module

This figure shows an example simulation of a sandwich diffusion couples for the Cr-Fe-Ni system at 1100 ℃ for 1 hour.

This figure shows a dissolution simulation of Si particles formed during solidification. In a heat treatment process, the first step is usually solution treatment to dissolve the particles formed in the casting process. This type of simulation helps users to optimize the solution treatment temperature and time.

This figure shows a diffusion simulation of Ni3Al/Ni diffusion couple annealed at 1200 ℃ for 43.2 hours with experimental data. The initial γ’/γ interface is moved after annealing.

This figure shows an example of diffusion simulation between multi-component nickel-based superalloys: IN100 and IN718 at 1150 ℃ for 1000 hours.