于超
,
任会兰
,
宁建国
材料工程
doi:10.11868/j.issn.1001-4381.2014.10.015
通过实验方法和分子动力学模拟方法研究了91％(质量分数,下同)细化颗粒钨合金材料的塑性力学问题.结果表明:细化钨合金材料具有应变率效应,且随着应变率的增加,屈服强度增强;钨合金材料应力应变关系具有显著的温度效应、尺度效应和晶向效应;基于对钨合金材料的数值模拟结果与实验结果对比,得到了两种方法具有一致性的结论,证明了该MD模拟的准确性以及拟合出高应变率幂律公式的可信性.
关键词:
钨合金
,
应变率
,
分子动力学
,
屈服强度
,
数值模拟
SHAO Jun Shanghai University of Science and Technology
,
Shanghai
,
ChinaXU Hua CHEN Nianyi Shanghai Institute of Metallurgy
,
Academia Sinica
,
Shanghai
,
China SHAO Jun Associate Professor
,
Dept.of Chemistry
,
Shanghai University of Science and Technology
,
Shanghai 201800
,
China
金属学报(英文版)
The structure and properties of molten salt solution o J Li,KF,Cl system have been investigedby computerized simulation of molecular dynamic method.The partial RDF,the partial molarenergy of mixing and the diffusion coeffients of Li~+,K~+,F~- and Cl~- have been calculated.The results are in agreement with the experimental values.The regularities of the distributionof ions and mieroscopic holes are discussed based on the results of computerized simulation.
关键词:
alkali halide
,
null
,
null
,
null
