Atomistic models of point defects in plutonium metal. Metadata

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  • Main Title Atomistic models of point defects in plutonium metal.


  • Author: Valone, S. M. (Steven M.)
    Creator Type: Personal
  • Author: Baskes, M. I. (Michael I.)
    Creator Type: Personal
  • Author: Uberuaga, B. P. (Blas Pedro)
    Creator Type: Personal
  • Author: Voter, A. F.
    Creator Type: Personal


  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization


  • Name: Los Alamos National Laboratory
    Place of Publication: United States


  • Creation: 2003-01-01


  • English


  • Content Description: The aging properties of plutonium (Pu) metal and alloys are. driven by a combination of materials composit ion, p rocessing history, and self-irradiat ion effects . Understanding these driving forces requires a knowledge of both t h ermodynamic and defect properties of the material . The multiplicity of phases and the small changes in tempe rat u re, pressure, and/or stress that can induce phase changes lie at the heart of these properties . In terms of radiation damage, Pu metal represents a unique situation because of the large volume chan ges that accompany the phase changes . The most workable form of the meta l is the fcc (S-) phase, which in practice is stabi l ized by addit io n of a ll oying el eme n ts s u c h as Ga or Al. The thermodynamically stable phase at ambient conditions is the monoclinic (a-) phase, which, however, is 2 0 % lower i n volume th an the S phase . In stabilized Pu metal, there is an in t er play between th e n atu ral swe l li n g tendencies of fcc metals and the volume-contraction tendency of the u n d erlyin g thermodynamicall y stable phase. This study exp lores the point d efect pr operties that are necessary to model the long-term outcome of this interplay.
  • Physical Description: [5] p.


  • Keyword: Aging
  • Keyword: Alloys
  • Keyword: Multiplicity
  • STI Subject Categories: 36 Materials Science
  • Keyword: Point Defects
  • Keyword: Radiations
  • Keyword: Defects
  • Keyword: Plutonium


  • Conference: Submitted to: Extended Abstract For Presentation at Plutonium Futures 2003, Conference, July 6-10, 2003, Albuquerque, NM


  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI


  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article


  • Text


  • Report No.: LA-UR-03-0754
  • Grant Number: none
  • Office of Scientific & Technical Information Report Number: 976547
  • Archival Resource Key: ark:/67531/metadc933802