Grain Size Distributions

  • Compare grain growth with and without precipitate

    • Lattice: 128x128; (spparks rendered): dump image:

      without precipitate
    ../images/grain_growth.01.png ../images/grain_growth.31.png ../images/grain_growth.281.png

    • Lattice: 128x128; (spparks rendered): dump image:

      with precipitate, F=0.01
    ../images/grain_growth.02.png ../images/grain_growth.32.png ../images/grain_growth.282.png

  • Post-process and analyze grain-size distributions

    • Average growth size versus time; Note trends:

      left: without precipitate, right: with precipitate, F=0.01
    ../images/N.1024.grainsize_versus_time1.jpg ../images/N.1024.grainsize_versus_time2.jpg

    • Grain size distributions:

      left: without precipitate, right: with precipitate, F=.01
    ../images/N.1024.kT=0.050.121.jpg ../images/N.1024.kT=0.050.122.jpg ../images/N.1024.kT=0.250.121.jpg ../images/N.1024.kT=0.250.122.jpg ../images/N.1024.kT=0.500.121.jpg ../images/N.1024.kT=0.500.122.jpg

Summary of key points

  • Model normal isotropic grain growth using the potts model
  • Include single precipitate using spparks pin command
  • Visualize and analyze similarly to case without precipitate
  • Observe precipitate slows grain growth
  • Also see Rules of Thumb for Potts Model