Calculation of electric field effects on the Gibbs free energy of the Al-Li-Mg alloy

被引：0
|
作者：
ZHANG Jianjun
机构：
来源：
Rare Metals | 2007年 / 05期
基金：
中国国家自然科学基金;
关键词：
Al-Li-Mg alloy; thermodynamics parameters; Thomas-Fermi model; electric field;
D O I：
暂无
中图分类号：
TG146.21 [];
学科分类号：
摘要：
Based on the Thomas-Fermi model,the calculation methods of the monatomic Gibbs free energy were found. The interior potential boundary condition under electric field was defined. The calculation methods of Gibbs free energy for the monatomic,compound,and solid solution with electric field were set up. Under the influence of electric field,the Gibbs free energy of Al is the most sensitive,followed by those of Li and Mg. At the solution temperature the Gibbs free energies of Al3Li and its elements under electric field are not symmetrical about the zero point of electric field,whereas at the aging temperature their values are symmetrical about the zero point of electric field. At the solution temperature near the zero point of electric field,the Gibbs free energy of Al3Li is higher than that of Al-2.14%Li. And at 460 K the Gibbs free energy of Al3Li is lower than that of Al-2.14wt.%Li under electric field. The Gibbs free energy of 1420 alloy decreases from both sides of electric field to the zero point at the aging temperature.
引用
收藏
页码：508 / 514
页数：7
相关论文
共 50 条
  • [21] Calculation of entropy energy of Al-Mg alloy in the external electric field by Thomas-Fermi model
    Northwestern Polytechnical University, Xi'an 710072, China
    Xiyou Jinshu Cailiao Yu Gongcheng, 2006, 12 (1874-1878):
  • [22] Calculation of entropy energy of Al-Mg alloy in the external electric field by Thomas-Fermi model
    Liu Xia
    Zhang Jianjun
    Chen Zheng
    Wang Yongxin
    RARE METAL MATERIALS AND ENGINEERING, 2006, 35 (12) : 1874 - 1878
  • [23] EXPERIMENTAL-STUDY AND THERMODYNAMIC CALCULATION OF THE AL-LI-MG EQUILIBRIUM PHASE-DIAGRAM
    DUBOST, B
    BOMPARD, P
    ANSARA, I
    JOURNAL DE PHYSIQUE, 1987, 48 (C-3): : 473 - 479
  • [24] Mechanism of δ′-phase formation in Al-Li and Al-Li-Mg systems alloys
    Alekseev, AA
    Lukina, EA
    Ermolova, MI
    Khokhlatova, LB
    ALUMINUM ALLOYS 2002: THEIR PHYSICAL AND MECHANICAL PROPERTIES PTS 1-3, 2002, 396-4 : 989 - 994
  • [25] THE EFFECT OF STRAIN RATE ON FLOW-STRESS, STRENGTH AND DUCTILITY OF AN AL-LI-MG ALLOY
    SRIVATSAN, TS
    HOFF, T
    SRIRAM, S
    PRAKASH, A
    JOURNAL OF MATERIALS SCIENCE LETTERS, 1990, 9 (03) : 297 - 300
  • [26] Pitting corrosion of spray formed Al-Li-Mg alloys
    Moore, K. L.
    Sykes, J. M.
    Hogg, S. C.
    Grant, P. S.
    CORROSION SCIENCE, 2008, 50 (11) : 3221 - 3226
  • [27] Microstructure and mechanical properties of cast Al-Li-Mg alloy: Role of Cu addition and heat treatment
    Qi, Fangzhou
    Wu, Guohua
    Zhang, Liang
    Tong, Xin
    Xu, Xuanxi
    Guo, Youjie
    JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, 2024, 199 : 1 - 16
  • [28] Microstructures and mechanical properties of grain refined Al-Li-Mg casting alloy by containing Zr and Ti
    Asahi Tec Corp, Shizuoko, Japan
    Keikinzoku J Jpn Inst Light Met, 7 (385-390):
  • [29] THE CORRELATION BETWEEN MECHANICAL ALLOYING AND THE MICROSTRUCTURE OF AL-LI-MG ALLOYS
    LAYYOUS, A
    NADIV, S
    LIN, IJ
    POWDER METALLURGY INTERNATIONAL, 1990, 22 (03): : 21 - 24
  • [30] CONTRIBUTION TO THE ESTABLISHMENT OF THE EQUILIBRIUM DIAGRAM FOR PHASES OF THE AL-LI-MG SYSTEM
    DUBOST, B
    BOMPARD, P
    ANSARA, I
    MEMOIRES ET ETUDES SCIENTIFIQUES DE LA REVUE DE METALLURGIE, 1986, 83 (09): : 437 - 437
12345