A cellular automaton simulation of w–ni alloy solidification in laser solid forming process

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Abstract

An alloy cellular automaton (CA) model is developed for the microstructure simulation in directional solidification and laser solid forming (LSF) process. The CA model’s capture rule was modified by a limited neighbor solid fraction (LNSF) method. A multiscale two-dimensional model is presented for simulating laser remelting process, which is the same as LSF without the addition of metallic powders into melt pool. The metallurgy process in melt pool was simulated, including temperature distribution, pool shape and solidification of microstructure. The microstructure evolution of tungsten– nickel alloy (W–Ni) during LSF is also simulated by present CA model.

Original languageEnglish
Article number1750016
JournalJournal of Micromechanics and Molecular Physics
Volume2
Issue number4
DOIs
StatePublished - Dec 2017

Keywords

  • Cellular automaton (CA)
  • Laser solid forming
  • W–Ni alloy

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