杠杆定律在铁碳合金相图中的应用

铁碳合金是应用最广泛的金属材料，铁碳合金相图是研究铁碳合金的重要工具。不同成分的铁碳合金具有不同的相组分和组织组分，这将直接影响铁碳合金的性能和用途。本文利用杠杆定律来确定不同成分的铁碳合金中相组分和组织组分的相对含量，从而确定不同成分铁碳合金的性能。

The Iron-Carbon Alloy is wide used and the Phase Diagrams of the Iron-Carbon Alloy is an important means of research. Iron-Carbon Alloy of different element has different alloy phase and structure phase； it will have influence on properties and applications of Iron-Carbon Alloy. By the lever rule， the contents of kinds of alloys in alloy phase can be determined， and then the property of materials which have different phases and structures can be determined.