IRadMat-NID计及缺陷时空关联和一维运动的材料中子辐照损伤团簇动力学模拟软件

IRadMat-NID是模拟中子辐照下材料微结构演化的团簇动力学自主C程序。该程序通过在平均场速率方法中引入计及中子能谱信息和缺陷时—空间关联的初级缺陷产生源项，并基于扩散理论改进位错环的一维瞬态速率模型，分别修正了辐照产生项和缺陷反应/吸收项，提升了模型的准确性。该程序实现了不同反应堆辐照任意金属材料体系中，不同种类辐照缺陷（团簇）和不同类型缺陷捕获阱（杂质/界面/位错线等）间的相互作用及其长时间演化的严格定量模拟，可提供含时的缺陷（团簇）分布、捕获阱吸收强度和材料力/热性能等重要信息。

IRadMat-NID is a self-developed C program for simulating microstructural evolution in materials via cluster dynamics under neutron irradiation. By introducing a primary defect production source term that accounts for both neutron energy spectrum information and the time-space correlation of defects into the mean-field rate method and revising the one-dimensional transient rate model for dislocation loops based on diffusion theory, this program separately modifies the irradiation production term and defect reaction/absorption term, thus improving the model’s accuracy. This program enables rigorous quantitative simulations of the interactions between various types of irradiation-induced defects (clusters) and different defect trapping sites (including impurities, interfaces, dislocation lines, etc.) as well as their long-time evolution in arbitrary metallic material systems under neutron irradiation from various reactors, and can provide critical information such as time-dependent defect (cluster) distributions, trapping site absorption strengths, and the mechanical and thermal properties of the materials.

搜集汇总

背景与挑战

背景概述

该数据集是一个用于模拟中子辐照下材料微结构演化的团簇动力学软件，通过改进的模型提升了模拟准确性，能够提供缺陷分布和材料性能等重要信息。