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Al-Li-Mg(Ti)合金形成焓的EAM研究 被引量:2

EAM CALCULATION OF FORMATION ENTHALPIES OF Al,Li AND Mg(Ti) INTERMETALLIC COMPOUNDS
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摘要 采用普适分析型的嵌入原子模型,通过拟合纯元素的晶格常数、空位形成能、结合能和体积弹性模量等,确定了Al、Li、Mg和Ti4个元素的嵌入原子模型参数.不同元素之间的相互作用势的参数由拟合实验或第一原理计算结果确定.用确定的嵌入原子模型分别计算了由Al、Li、Mg和Ti元素构成的二元系以及三元系中的有序合金化合物的形成焓,计算结果与已有的实验结果和第一原理计算结果符合得比较好. The model parameters of the general analytic embedded-atom method (EAM) for Al, Li, Mg and Ti have been determined by fitting the lattice constant, the mono-vacancy formation energy, the cohesive energy and the bulk elastic modulus of pure element. The parameters of the pair-potential between two different elements have been determined by fitting to experimental data or results calculated with first principles. The enthalpies of formation of intermetallic compounds for binary and ternary systems composed of Al, Li, Mg(Ti) have been calculated. The calculated results are in agreement with the experiments and the ab initio results or other EAM results.
出处 《金属学报》 SCIE EI CAS CSCD 北大核心 2008年第2期134-138,共5页 Acta Metallurgica Sinica
基金 广西自然科学基金项目(桂科自0728025) 广西研究生创新计划项目2007105930805M56资助~~
关键词 Al LI Mg TI 金属化合物 嵌入原子方法 形成焓 Al, Li, Mg, Ti, intermetallic compound, embedded-atom method, enthalpy of formation
作者简介 侯育花,女,1982年生,硕士生 Correspondent: OUYANG Yifang, professor, Tel: (0771)3232666, E-mail: ouyangyf@gxu.edu.cn
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  • 1LI Cheng Beijing Central Design and Research Institute for Non-Ferrous Metallurgical Industry,Beijing,ChinaLIU Chunpeng,Kunming Institute of Technology,Kunming,China LI Cheng,Metallurgical Dept.No.l,Beijing Central Design and Research Institute for Non-Ferrous Metallurgical Industry,Beijing 100038,China.KINETICS OF REACTION BETWEEN PbS AND PbO[J].Acta Metallurgica Sinica(English Letters),1990,3(11):293-297. 被引量:12

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