On Boundary Misorientation Distribution Functions and How to Incorporate them into 3D Models of Microstructural Evolution

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The fundamental difficulties incorporating experimentally obtained-boundary disorientation distributions (BMD) into 3D 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 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 microstructure containing both incidental dislocation boundaries (IDBs) and geometrically necessary boundaries (GNBs).

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Godfrey, A.W.; Holm, E.A.; Hughes, D.A. & Miodownik, M. December 23, 1998.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 19 times . More information about this article can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Laboratories, Albuquerque, NM, and Livermore, CA
    Place of Publication: Albuquerque, New Mexico

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Description

The fundamental difficulties incorporating experimentally obtained-boundary disorientation distributions (BMD) into 3D 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 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 microstructure containing both incidental dislocation boundaries (IDBs) and geometrically necessary boundaries (GNBs).

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  • Journal Name: Acta Mat.

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  • Other: DE00002793
  • Report No.: SAND98-2881J
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 2793
  • Archival Resource Key: ark:/67531/metadc672914

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Office of Scientific & Technical Information Technical Reports

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  • December 23, 1998

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • Nov. 30, 2016, 2:07 p.m.

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Godfrey, A.W.; Holm, E.A.; Hughes, D.A. & Miodownik, M. On Boundary Misorientation Distribution Functions and How to Incorporate them into 3D Models of Microstructural Evolution, article, December 23, 1998; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc672914/: accessed June 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.