Density of magnesium and magnesium–lithium alloys in solid and liquid states

作     者：R.N.ABDULLAEV R.A.KHAIRULIN Yu.M.KOZLOVSKII A.Sh.AGAZHANOV S.V.STANKUS R. N. ABDULLAEV;R. A. KHAIRULIN;Yu. M. KOZLOVSKII;A. Sh. AGAZHANOV;S. V. STANKUS

作者机构：Institute of Thermophysics Siberian Branch of the Russian Academy of SciencesLavrentyev Avenue 1 630090 Novosibirsk Russia 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2019年第29卷第3期

页      面：507-514页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the study of volume properties of melts and density changes during the solid–liquid transition was financially supported by RFBR (Grant No. 16-38-00669) 

主　　题：density melt solid magnesium magnesium-lithium alloys thermal expansion interdiffusion 

摘      要：New experimental data are presented on the density and thermal expansion of solid and liquid magnesium and ultralight magnesium–lithium alloys containing 23.03 and 30.02 at.% Li, respectively. The measurements were performed using the dilatometer method and the gamma-ray attenuation technique in the temperature range from 145 to 1244 K for magnesium and from 293 to ~1000 K for the alloys. The density changes during the solid?liquid phase transition were directly measured for Mg and the Mg70Li30 alloy. The temperature dependences and reference tables of the investigated volumetric properties were developed. A comparison of the obtained results with literature data was made. The study showed that the eutectic composition in the magnesium- lithium system differs from 23 at.% Li. The concentration dependence of molar volume of the magnesium-lithium liquid system was found to be almost linear in the interval of 0-30 at.% Li and deviated noticeably from the corresponding dependence for an ideal mixture.