论文部分内容阅读
高Cr的铁素体/马氏体钢(F/M钢)由于具备优良的热机械性能,如高强度、较低的辐照肿胀、较低的热膨胀系数、较高的热导率,被普遍认为是第4代堆和聚变堆的候选结构材料。铁素体钢在热老化及辐照下会析出富Cr的α’相,该相会阻碍位错运动,引起材料硬化和脆化。研究位错与Cr析出物的相互作用机理是研究铁素体钢辐照硬化的前提。本文利用分子动力学方法研究了BCC-Fe体
High Cr ferritic / martensitic steel (F / M steel) due to its excellent thermal mechanical properties, such as high strength, low radiation swelling, low thermal expansion coefficient, high thermal conductivity, It is generally considered as a candidate structural material for the 4th generation reactor and fusion reactor. Ferritic steels will precipitate Cr-rich α ’phases upon heat aging and irradiation, which phase hinders dislocation motion, causing material to harden and embrittle. Studying the mechanism of the interaction between dislocations and Cr precipitates is a prerequisite for studying the radiation hardening of ferrite steel. In this paper, molecular dynamics method was used to study the BCC-Fe