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 LaboratoryPlace of Publication: United States
- Creation: 2003-01-01
- 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:  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 ReportsCode: OSTI
Name: UNT Libraries Government Documents DepartmentCode: UNTGD
- Report No.: LA-UR-03-0754
- Grant Number: none
- Office of Scientific & Technical Information Report Number: 976547
- Archival Resource Key: ark:/67531/metadc933802