The thermodynamic stability induced by solute co-segregation in nanocrystalline ternary alloys
作者： Tao Liang , Zheng Chen , Xiaoqin Yang , Jinyong Zhang , Ping Zhang
DOI: 10.3139/146.111496
关键词:
摘要: Abstract The grain growth and thermodynamic stability induced by solute co-segregation in ternary alloys are presented. Grain behavior of the single-phase supersaturated grains prepared Ni–Fe–Pb alloy melt at different undercoolings was investigated performing isothermal annealings T = 400 °C–800 °C. Combining multicomponent Gibbs adsorption equation Guttmann's boundary segregation model, an empirical relation for derived. By application model to Ni–Fe–Pb, Fe–Cr–Zr Fe–Ni–Zr alloys, it predicted that driving energy zero is possible due interactive effect between solutes Fe/Pb, Zr/Ni Zr/Cr. A non-linear relationship rather than a simple linear 1/D* (D* metastable equilibrium size) ln(T) effect.
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