Rules for maximum solid solubility of transition metals in Ti, Zr and Hf solvents
(1. Institute of Hydrogen Storage Materials, Shanghai University,
Shanghai 200072，China;
2. Department of Mechanical, Automotive and Materials Engineering,
University of Windsor, Windsor, Ont, Canada N9B 3P4)
Shanghai 200072，China;
2. Department of Mechanical, Automotive and Materials Engineering,
University of Windsor, Windsor, Ont, Canada N9B 3P4)
Abstract: Based on the principle of energy change of alloy formation, the rules for the maximum solid solubility (Cmax) of various transition metals in the metals Ti, Zr and Hf were studied. It is deduced that the Cmax of transition metals in the metals Ti, Zr and Hf can be described as a semi-empirical equation using three atomic parameters, i.e.,electronegativity difference, atomic diameter and electron concentration. From the equation analysis by using experimental data, it shows that atomic size parameter and electronegativity difference are the main factors that affect the Cmax of the transition metals in the metals Ti, Zr and Hf while electron concentration parameter has the smallest effect on Cmax.
Key words: maximum solid solubility; prediction method; transition metals; electronegativity difference; atomic size factor; electron concentration