On the irradiation creep by climb-enabled glide of dislocations

JOURNAL OF NUCLEAR MATERIALS

卷:477

Article

Barashev, A. V.^1,2  Golubov, S. I.¹  Stoller, R. E.¹ 

[1] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA

[2] Univ Tennessee, Dept Mat Sci & Engn, Ctr Mat Proc, Knoxville, TN 37996 USA

关键词: Creep;    Metallic material;    Analytic functions;    Irradiation;   

DOI  :  10.1016/j.jnucmat.2016.04.053

来源: Elsevier

【 摘 要 】

In the climb-enabled glide model of irradiation creep, the plastic deformation is defined by the elastic deflections of pinned dislocations, which is an inconsistency. We argue that this relation is incorrect; instead, as in other pinning-unpinning-type models, the dislocations move from one set of obstacles to another, so that the inter-obstacle spacing determines creep rate, whereas the dependence on the applied stress is only implicit in the unpinning time. (C) 2016 Published by Elsevier B.V.

【 授权许可】

Free