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Article overview
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Temperature dependence of irradiation hardening due to dislocation loops and precipitates in RPV steels and model alloys | | S. Kotrechko
; V. Dubinko
; N. Stetsenko
; D. Terentyev
; Xinfu He
; | | Date: |
24 Sep 2014 | | Abstract: | A relative contribution to irradiation hardening caused by dislocation loops
and solute-rich precipitates is established for RPV steels of WWER-440 and
WWER-1000 reactors, based on TEM measurements and mechanical testing at reactor
operating temperature of 563 K. The pinning strength factors evaluated for
loops and precipitates are shown to be much lower than those obtained for model
alloys based on the room temperature testing as well as those evaluated by
means of atomistic simulations in the temperature range of 300 to 600 K. This
discrepancy is explained in the framework of a model of thermally activated
dislocation motion, which takes into account the difference in temperature and
strain rate employed in atomistic simulations and in mechanical testing. | | Source: | arXiv, 1409.6807 | | Services: | Forum | Review | PDF | Favorites | |
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