Implementation of Exact Grain-Boundary Geometry Into a 3D Monte-Carlo (POTTS) Model for Microstructure Evolution (Preprint)

Abstract

A three-dimensional Monte-Carlo (Potts) model was modified to incorporate the effect of grain-boundary inclination on boundary mobility. For this purpose, a straightforward geometric construction was developed to determine the local orientation of the grain-boundary plane. The combined effects of grain-boundary mobility were incorporated into the Monte-Carlo code using the definition of the tilt-twist component (TTC). The modified code was validated by simulating grain growth in microstructures comprising equiaxed or elongated grains as well as the static recrystallization of a microstructure of deformed (elongated) grains.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 2008
Accession Number
ADA489814

Entities

People

  • O. M. Ivasishin
  • S. V. Shevchenko
  • Sheldon Lee Semiatin

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Boundaries
  • Crystal Lattices
  • Geometry
  • Grain Boundaries
  • Grain Growth
  • Grain Size
  • Microstructure
  • Mobility
  • Molecular Dynamics
  • Orientation (Direction)
  • Personal Information Managers
  • Recrystallization
  • Simulations
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Materials science

Readers

  • Computational Fluid Dynamics (CFD)
  • Powder metallurgy of Titanium alloys.