The characteristics of the aluminum?magnesium alloy are light, good mechanical properties, corrosion resistance, low energy consumption, green and cheap, which make it more and more popular. Currently, aluminum?magnesium alloy has been widely used in automobile manufacturing, doors and windows sheet, medical apparatus and instruments, aerospace and marine transportation and other fields. The performances of aluminum?magnesium alloy are mainly affected by its thermophysical properties. It is important to study the surface properties involved in the presence of all liquid processes in the industrial process than other thermophysical properties. Surface tension, one of the key influence factors to the reaction of multiphase system and mass transfer, is a significant property of liquid metal, which plays a decisive role in the crystal growth of alloys, the microscopic appearance of welded joints and the cracking of metals during solidification. However, it is difficult to measure the surface tension at high temperature, only a small number of reference data can be referred to. In this work, the surface tensions of the Al?Mg, Al?Li and Mg?Li binary systems at 973 K were estimated on the basis of Butler?s equation, in combination with excess Gibbs energies, and the factors influencing surface tension were studied. The calculation results showed that the surface tension of aluminum melts decreased with the increase of magnesium or lithium content, the surface tension of magnesium melt decreased with increasing additions of lithium. On this basis, the surface tension of Al?Mg?Li ternary alloy at 973 K was calculated by using Chou model. The calculation results indicated that surface tension of Al?Mg?Li ternary alloy was approximately in the range of 0.326?0.851 N/m and its surface tension increased as the aluminum or magnesium content increased. Further, the essential factors that influence the surface tension were obtained. The results have important theoretical significance and practical application value for engineering research.
Shanshan LIU Bo WANG Ailin ZHOU Jieyu ZHANG Kuochih CHOU
. Estimation of surface tension of Al-Mg-Li ternary alloy[J]. The Chinese Journal of Process Engineering, 2020
, 20(1)
: 59
-66
.
DOI: 10.12034/j.issn.1009-606X.219180
[1]尹东霞, 马沛生, 夏淑倩.液体表面张力测定方法的研究进展[J].科技通报, 2007, 23(3):424-429
[2]Yin D X, Ma P S, Xia S Q.Progress on methods for measuring surface tension of liquids[J].Bulletin of Science and Technolocy, 2007, 23(3):424-429
[3] 程红艳, 王雨, 李丹科.连铸保护渣组分对熔渣表面张力的影响[J].连铸, 2008, ( 4):42-44
[4]Cheng H Y, Wang Y, Li D K.Effect of chemical components of mold flux on surface tension of molten slag[J]. [J].Continuous Casting, 2008, ( 4):42-44
[5] 李晶.锡基合金、铝基合金及含稀土铁合金熔体表面张力和润湿性的研究[D]. 北京: 中国科学院过程工程研究所, 2007.
[6]Li J.Study on surface tension and wettability of tin-based alloys, aluminum-based alloys and ferroalloys metls containing rare earth[D].Beijing: Institute of process engineering, Chinese Academy of Sciences, 2007.
[7]王仪玖.表面张力在铸造过程中的作用[J].江西冶金, 2002, 22(2):10-13
[8]Wang Y J.Action of surface tension in casting process[J].Jiangxi Metallurgy, 2002, 22(2):10-13
[9]范建峰, 袁章福, 柯家骏.高温熔体表面张力测量方法的进展[J].化学通报, 2004, 67(11):802-807
[10]Fan J F, Yuan Z F, Ke J J.Development in measuring surface tension of high temperature molten liquid[J].Chemistry Bulletin, 2004, 67(11):802-807
[11]Kohler F.Zur Berechnung der thermodynamischen Daten eines tern?ren Systems aus den zugeh?rigen bin?ren Systemen[J].Monatshefte für Chemie und verwandte Teile anderer Wissenschaften, 1960, 91(4):738-740
[12]Contreras S B, Ehlin H B, Klein G.Preparation of manganese by metallothermal reaction under reduced pressure[J].Compt Rend, 1958, 247(11):5441-7
[13]Olson N J, Toop G W.Predicting ternary phase diagrams and quaternary excess free-energy using binary data[J].Transactions of the Metallurgical Society of Aime, 1969, 245(5):905-928
[14] Colinet C.DES.; Fac. des Sci[J]. Univ. Grenoble, France, 1967.
[15]Muggianu Y M, Gambino M, Bros J.Enthalpies of formation of liquid alloys bismuth-gallium-tin at 723k-choice of an analytical representation of integral and partial thermodynamic functions of mixing for this ternary-system[J].Journal de Chimie Physique et de Physico-Chimie Biologique, 1975, 72(1):83-88
[16]Hillert M.Empirical methods of predicting and representing thermodynamic properties of ternary solution phases[J].Calphad, 1980, 4(1):1-12
[17]Chou K C.A general solution model for predicting ternary thermodynamic properties[J].Calphad, 1995, 19(3):315-325
[18] 周国治.新一代几何模型在估算其它物化性质中的应用[C]. 全国相图学术会议, 2000.
[19]Chou K C.Application of new generation geometric model in estimating other physicochemical properties[C]. National Academic Conference on Phase Diagram, 2000.
[20] Fridlyander I.Aluminum alloys in aircraft in the periods of 1970–2000 and 2001–2015[J].[J].Metal science and heat treatment, 2001, 43(1-2):6-10
[21]Tanaka T, Hack K, Hara S.Calculation of surface tension of liquid Bi Sn alloy using thermochemical application library ChemApp[J].Calphad, 2000, 24(4):465-474
[22]Chou K C, Wei S K.A new generation solution model for predicting thermodynamic properties of a multicomponent system from binaries[J].Metallurgical and Materials Transactions B, 1997, 28(3):439-445
[23]Redlich O, Kister A.Thermo-dynamics of nonelectrolyte solutions-xyt relations in a binary system[J].Industrial & Engineering Chemistry, 1948, 40(2):341-345
[24]Li Q, Zhao Y Z, Luo Q.Experimental study and phase diagram calculation in Al–Zn–Mg–Si quaternary system[J].Journal of Alloys and Compounds, 2010, 501(2):282-290
[25]Guo C P, Liang Y, Li C R.Thermodynamic description of the Al–Li–Zn system[J].Calphad, 2011, 35(1):54-65
[26]Wang P S, Du Y, Liu S H.Thermodynamic optimization of the Li–Mg and Al–Li–Mg systems[J].Calphad, 2011, 35(4):523-532
[27]Keene B.Review of data for the surface tension of pure metals[J].International Materials Reviews, 1993, 38(4):157-192
[28]Goicoechea J.Surface tension of binary and ternary aluminium alloys of the systems Al-Si-Mg and Al-Zn-Mg[J].Journal of materials science, 1992, 27(19):5247-5252
[29]Trybula M.Bulk and surface properties of Liquid Al-Li and Li-Zn alloys[J].Metallurgical and Materials Transactions A, 2014, 45(12):5517-5530
