论FeCr合金辐照损伤的多尺度模拟

Multi-scale modeling of radiation damage in FeCr alloy

铁素体/马氏体钢具有优异的抗辐照肿胀和抗腐蚀能力,是聚变堆、ADS和四代堆结构材料重要候选者之一.多尺度模拟在核武器自辐照损伤、压力容器辐照脆化、医学材料辐照损伤等方面有着广泛的应用.国际上围绕F/MFeCr合金辐照损伤开展了大量的多尺度模拟工作.论文概述了F/MFeCr合金辐照损伤多尺度模拟研究现状及进展,并针对目前存在的某些问题提出了解决建议.

Since irradiation experiments of ferritic/martensitic（F/M） FeCr alloys show that F/M steels undergo much less swelling than austenitic steels during neutron or charged particle irradiation,in addition,it is well-known that high chromium content of F/M alloys provide good resistance against corrosion,they are considered as one of the most attractive candidate materials for future nuclear facilities,such as Fusion Reactor,ADS and generation Ⅳ reactors. Although irradiation experiments can not be replaced by modeling,a purely experimental approach to understanding the effects of irradiation is also not practicable,so in recent years substantial progress has been made in the field of multi-scale modeling of radiation damage in F/M FeCr alloys. The present paper is a review of methods used and results achieved within the last couple of years,and some suggestions are put forward for the further improvements.