Accession Number : AD0719905

Title :   On Radiation-Enhanced Creep.

Descriptive Note : Technical rept.,

Corporate Author : HARVARD UNIV CAMBRIDGE MASS DIV OF ENGINEERING AND APPLIED PHYSICS

Personal Author(s) : Ashby,M. F.

Report Date : FEB 1971

Pagination or Media Count : 16

Abstract : A physical model for a mechanism by which a flux of neutrons can enhance the creep rate of a material leads to a creep rate which is linear in stress. The radiation-induced climb of dislocations or dislocation loops is biased by a small applied stress. At steady state, the density of climbing dislocations depends on the generation rate of point defects. The model leads to a creep rate which may be almost independent of temperature. (Author)

Descriptors :   (*CREEP, MATHEMATICAL ANALYSIS), (*DAMAGE, NEUTRON REACTIONS), (*REACTOR MATERIALS, *DEFORMATION), DISLOCATIONS, STRESSES, NEUTRON FLUX, (U)NEUTRON FLUX

Subject Categories : Radioactiv, Radioactive Wastes & Fission Prod
      Fission Reactor Materials
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE