THERMODYNAMIC PROPERTIES OF IRON MELTS WITH TITANIUM, ZIRCONIUM, AND HAFNIUM

被引：15
|
作者：
Agraval, P. G. [1 ]
Dreval, L. A. [1 ]
Turchanin, M. A. [1 ]
机构：
[1] Donbass State Mech Engn Acad, Kramatorsk, Ukraine
来源：
POWDER METALLURGY AND METAL CERAMICS | 2017年 / 55卷 / 11-12期
关键词：
enthalpy of mixing; thermodynamic properties; alloys of iron with titanium; zirconium; and hafnium; ideal associated solution model; amorphous alloys; BINARY COPPER SYSTEMS; LIQUID ALLOYS; PHASE-EQUILIBRIA; ZR; ENTHALPY; CRYSTALLIZATION; CALORIMETRY; 3D-METALS; GLASSES; METALS;
D O I：
10.1007/s11106-017-9858-8
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The literature data on the enthalpies of mixing and thermodynamic activities of Fe-Ti, Fe-Zr, and Fe-Hf liquid alloys are summarized. It is shown that the thermodynamic properties of these systems are characterized by significant negative deviations from the ideal behavior. In the framework of the associated solution model, the composition and temperature dependences of the thermodynamic functions of mixing for the Fe-Ti, Fe-Zr, and Fe-Hf systems are described. The temperature dependence of the thermodynamic properties of the considered systems is characterized by increase in negative deviations from the ideality with decreasing temperature and increasing thermodynamic stability of supercooled melts. Analysis of the degree of short-range order in the system melts, estimated as the total mole fraction of associates Sigma x(ass) at the glass transition temperature, allows us to successfully interpret the known composition ranges of glass transition for the Fe-Zr and Fe-Hf melts and predict the composition range of glass transition for the Fe-Ti melts.
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页码：707 / 716
页数：10
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