Driving force for exaggerated grain growth

Searcy, A W

Title: Driving force for exaggerated grain growth

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Abstract

The driving force for exaggerated grain growth is derived from a new surface thermodynamic theory which reconciles the kinetics of equilibrium to the thermodynamics of equilibrium between subparts of a particle with anisotropic surface energies. Exaggerated growth is driven by the reduction in dislocation and grain boundary free energies produced when a larger grain sweeps out a volume element formerly occupied by small grains. Whether the advancing boundary is planar, concave, or convex depends on the relative rates of ledge nucleation and growth, on the growth direction, and on whether growth occurs at screw dislocations. The model is compared to observations and additional tests are suggested.

Authors:: Searcy, A W

Publication Date:: Tue Oct 01 00:00:00 EDT 1985

Research Org.:: Lawrence Berkeley Lab., CA (USA)

OSTI Identifier:: 6246461

Report Number(s):: LBL-20524; CONF-8510111-1
ON: DE86006060

DOE Contract Number:: AC03-76SF00098

Resource Type:: Conference

Resource Relation:: Conference: 38. American Ceramic Society Pacific Coast regional meeting, Irvine, CA, USA, 28 Oct 1985

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; GRAIN GROWTH; KINETICS; GRAIN BOUNDARIES; THERMODYNAMICS; CRYSTAL STRUCTURE; MICROSTRUCTURE; 656000* - Condensed Matter Physics

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                    Searcy, A W. Driving force for exaggerated grain growth.  United States: N. p., 1985. 
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                    Searcy, A W. Driving force for exaggerated grain growth.  United States.

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                    Searcy, A W. 1985.  
        "Driving force for exaggerated grain growth".  United States.  https://www.osti.gov/servlets/purl/6246461.

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@article{osti_6246461,

  title        = {Driving force for exaggerated grain growth},

  author       = {Searcy, A W},

  abstractNote = {The driving force for exaggerated grain growth is derived from a new surface thermodynamic theory which reconciles the kinetics of equilibrium to the thermodynamics of equilibrium between subparts of a particle with anisotropic surface energies. Exaggerated growth is driven by the reduction in dislocation and grain boundary free energies produced when a larger grain sweeps out a volume element formerly occupied by small grains. Whether the advancing boundary is planar, concave, or convex depends on the relative rates of ledge nucleation and growth, on the growth direction, and on whether growth occurs at screw dislocations. The model is compared to observations and additional tests are suggested.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/6246461},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Oct 01 00:00:00 EDT 1985},

  month        = {Tue Oct 01 00:00:00 EDT 1985}

}

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