Applications of disorder-induced concept to critical-solute-accumulation processes.

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A generalized version of the Lindemann melting criterion has recently been used to develop a unified thermodynamic description of disorder-induced amorphization and heat-induced melting. This concept of amorphization as a melting process is based on the fact that the melting temperature of a defective crystal driven far from equilibrium will decrease relative to that of its defect-free equilibrium state. The broader view of melting provides a new perspective of damage-accumulation processes such as radiation damage, ion implantation, ion beam mixing, plastic deformation, and fracture. For example, within this conceptual framework, disorder-induced amorphization is simply polymorphous melting of a critically disordered ... continued below

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19 p.

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Lam, N. Q.; Okamoto, P. R. & Heuer, J. K. October 10, 2000.

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A generalized version of the Lindemann melting criterion has recently been used to develop a unified thermodynamic description of disorder-induced amorphization and heat-induced melting. This concept of amorphization as a melting process is based on the fact that the melting temperature of a defective crystal driven far from equilibrium will decrease relative to that of its defect-free equilibrium state. The broader view of melting provides a new perspective of damage-accumulation processes such as radiation damage, ion implantation, ion beam mixing, plastic deformation, and fracture. For example, within this conceptual framework, disorder-induced amorphization is simply polymorphous melting of a critically disordered crystal at temperatures below the glass transition temperature. In the present communication, we discuss the application of the concept to two specific cases: amorphous phase formation during ion implantation and solute segregation-induced intergranular fracture.

Physical Description

19 p.

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OSTI as DE00766320

Medium: P; Size: 19 pages

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  • International Conference on Ion Beam Modification of Materials, Canela - Rio Grande do Sul (BR), 09/03/2000--09/08/2000

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  • Report No.: ANL/MSD/CP-103023
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 766320
  • Archival Resource Key: ark:/67531/metadc718645

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  • October 10, 2000

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

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  • April 7, 2017, 4:26 p.m.

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Lam, N. Q.; Okamoto, P. R. & Heuer, J. K. Applications of disorder-induced concept to critical-solute-accumulation processes., article, October 10, 2000; Illinois. (digital.library.unt.edu/ark:/67531/metadc718645/: accessed December 13, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.