Metastable phase diagrams of Cu-based alloy systems with a miscibility gap in undercooled state
Metastable phase diagrams of Cu-based alloy systems with a miscibility gap in undercooled state
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过冷状态下具有混溶间隙的铜基合金体系的亚稳相图
DOI：
10.1007/s10853-011-5612-7
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发表时间：
2011-10-01
影响因子：
4.5
通讯作者：
Wang, Fang
中科院分区：
文献类型：
--
作者：
Cao, Chongde D.;Sun, Zhanbo;Wang, Fang
一些具有大的正混合焓的Cu基合金系统在平衡条件下显示出共晶或包晶相图，但在过冷状态下显示出亚稳的液相扩散间隙。当熔体过冷到超过临界液相分离温度的一定温度以下时，它会分离成两种成分不同的液体。在凝固发生之前，两种液体的组成在亚稳相图上连续变化。亚稳态混溶间隙的形状和位置取决于合金成分及其相互作用特征。本文综述了从实验和热力学计算得到的铜基合金体系的亚稳相图。
Some Cu-based alloy systems with a large positive enthalpy of mixing display a eutectic or peritectic phase diagram under equilibrium conditions, but show a metastable liquid miscibility gap in the undercooled state. When the melt is undercooled below certain temperature beyond the critical liquid-phase separation temperature, it separates into two liquids with different compositions. The compositions of the two liquids change successively upon the metastable phase diagram before solidification occurs. The shape and position of the metastable miscibility gap are dependent of the alloy components and their interaction features. This study reviews the metastable phase diagrams of Cu-based alloy systems, which are derived from experiments and thermodynamic calculations.