燕山大学学报2024，Vol.48Issue(2)：95-109,15.DOI:10.3969/j.issn.1007-791X.2024.02.001
微观孔洞演化的分子动力学研究进展
Advances in molecular dynamics research of microvoid evolution
摘要
Abstract
Microvoids are commonly observed in advanced metal materials such as nickel-based single crystal superalloys,special steels,titanium alloys,cast aluminum alloys,and 3D printed polycrystalline metal materials.Due to the lack of mechanistic understanding of microvoids evolution and damage,the influence of microvoids on material properties has not yet been unified.The important reason is that it is difficult to obtain various physical fields such as stress,strain,and energy by experimental means.Molecular dynamics simulation(MD)can provide intuitive dynamic evolution information from the details of atomic motion,is often used to study the influence of microvoids aggregation on the mechanical properties of materials,providing a theoretical basis for the design and performance regulation of advanced materials.Through the quantitative processing of physical quantities such as energy,atomic stress,and strain obtained by MD calculations,the physical essence of microvoids evolution can be provided for larger-scale calculation.This article focuses on the application of MD simulation in the microvoids evolution of advanced materials.Starting from the current research status at home and abroad,the current research hot spots and key conclusions are summarized,and some problems existing in current MD simulation are analyzed.The development trend of related research in the future is prospected.关键词
微孔洞演化/分子动力学/先进材料/原子细节Key words
microvoids evolution/molecular dynamics/advanced materials/atomic details分类
航空航天引用本文复制引用
王佳坡,张梦浩,梁建伟,彭艳..微观孔洞演化的分子动力学研究进展[J].燕山大学学报,2024,48(2):95-109,15.基金项目
国家自然科学基金资助项目(12302105,52305163,52075471) （12302105,52305163,52075471）
河北省自然科学基金青年基金资助项目(E2022203101) （E2022203101）
河北省高等学校科学研究项目(QN2023021) （QN2023021）
河北省自然科学基金创新群体资助项目(E2021203011) （E2021203011）
