A computer simulation of an extended dislocation barrier in a FCC crystal

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Description

A computer simulation has been performed to examine the formation and breakdown of various extended dislocation barriers in a crystal of atomistically simulated aluminum. Under an appropriate stress tensor an extended mixed dislocation was found to decompose by one of its partial dislocations dissociating into a 1/6[110] type stairrod dislocation and a glissile partial on an intersecting glide plane. The mechanism is shown to provide an efficient way to generate stacking faults, can be relevant to twin formation, and provides a stable barrier to dislocation motion.

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10 p.

Creation Information

Kurtz, R.J.; Hoagland, R.G. & Hirth, J.P. November 1, 1995.

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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. More information about this article can be viewed below.

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  • Pacific Northwest Laboratory
    Publisher Info: Pacific Northwest Lab., Richland, WA (United States)
    Place of Publication: Richland, Washington

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Description

A computer simulation has been performed to examine the formation and breakdown of various extended dislocation barriers in a crystal of atomistically simulated aluminum. Under an appropriate stress tensor an extended mixed dislocation was found to decompose by one of its partial dislocations dissociating into a 1/6[110] type stairrod dislocation and a glissile partial on an intersecting glide plane. The mechanism is shown to provide an efficient way to generate stacking faults, can be relevant to twin formation, and provides a stable barrier to dislocation motion.

Physical Description

10 p.

Notes

OSTI as DE96002612

Source

  • International conference on beam processing of advanced materials, Cleveland, OH (United States), 30 Oct - 2 Nov 1995

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  • Other: DE96002612
  • Report No.: PNL-SA--26421
  • Report No.: CONF-9510232--2
  • Grant Number: AC06-76RL01830
  • Office of Scientific & Technical Information Report Number: 149927
  • Archival Resource Key: ark:/67531/metadc624812

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Creation Date

  • November 1, 1995

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • April 7, 2016, 3:31 p.m.

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Kurtz, R.J.; Hoagland, R.G. & Hirth, J.P. A computer simulation of an extended dislocation barrier in a FCC crystal, article, November 1, 1995; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc624812/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.