On boundary misorientation distribution functions and how to incorporate them into three-dimensional models of microstructural evolution

Journal Article · Fri Jul 09 00:00:00 EDT 1999 · Acta Materialia

DOI:https://doi.org/10.1016/S1359-6454(99)00137-8· OSTI ID:6200782

Miodownik, M; Holm, E A ^[1]; Godfrey, A W; Hughes, D A ^[2]

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1. Sandia National Labs., Albuquerque, NM (United States)
2. Sandia National Labs., Livermore, CA (United States)

The fundamental difficulties of incorporating experimentally obtained boundary misorientation distributions (BMDs) into three-dimensional microstructural models are discussed. An algorithm is described which overcomes these difficulties. The boundary misorientations are treated as a statistical ensemble which is evolved toward the desired BMD using a Monte Carlo method. The application of this algorithm to a number of complex arbitrary BMDs shows that the approach is effective for both conserved and non-conserved textures. The algorithm is successfully used to create the BMDs observed in deformation microstructures containing both incidental dislocation boundaries (IDBs) and geometrically necessary boundaries (GNBs). The application of an algorithm to grain boundary engineering is discussed.

• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 6200782
• Journal Information: Acta Materialia, Vol. 47:9; ISSN 1359-6454
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALGORITHMS
COMPUTERIZED SIMULATION
DISLOCATIONS
MICROSTRUCTURE
MONTE CARLO METHOD
ORIENTATION
POLYCRYSTALS
THREE-DIMENSIONAL CALCULATIONS
CALCULATION METHODS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
CRYSTALS
LINE DEFECTS
MATHEMATICAL LOGIC
SIMULATION
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