杠杆定律在典型二元合金相图中的应用与实践

Application and Practice of Lever Law in Typical Binary Alloy Phase Diagram

使用杠杆定律对典型二元合金相图,即匀晶相图,共晶相图和包晶相图的两相区展开分析和说明,确定在不同温度区间内平衡组织的组成相和及其相对含量的计算方法。在此基础上,归纳总结杠杆定律在二元合金相图的使用方法,帮助材料专业的学生能更好理解二元合金,特别是铁碳相图,分析其冷却结晶过程及对其进行定量计算。

The leverage law is used to analyze the phase diagrams of typical binary alloys,including homogeneous phase diagrams,eutectic phase diagrams and peritectic phase diagrams,and determine the phase composition and phase relative amounts of the equilibrium structure in different temperature ranges.Based on that,the application of lever law in binary alloy phase diagram is summarized,which can help students majoring in materials understand binary alloy deeply,especially iron-carbon phase diagram,and analyze its cooling crystallization process and quantitatively calculate it.