Fe-Cr-Ni系相图计算

Phase Diagram Calculation for Fe-Cr-Ni System

相图是研究成分、温度、组织和性能之间关系的理论基础,是制定各种热加工工艺的依据,也是描述平衡凝固过程的有效工具。在钢铁材料中,Fe-Cr-Ni是一个非常重要的合金体系。奥氏体不锈钢、铁素体不锈钢和双相不锈钢均以Fe-Cr-Ni系富铁角为其基础成分。采用热力学软件Thermo-Calc计算了Fe-Cr-Ni三元系在500～1700℃的等温截面和Fe-C-12.5Cr-4.5Ni-0.5Si-0.6Mn(wt.%)系垂直截面。分析了Fe-Cr-Ni三元系等温截面和ZG0Cr13Ni4Mo马氏体不锈钢在相图中的相关系.

Phase diagram is the theoretical foundation of the composition-temperature-microstructure-properties,and the basis of hot working processing,and also the effective tool to describe solidification processes.Fe-Mn-Al alloys are of considerable technical and great practical importance for the iron and steel materials.Austenite stainless steels,ferrite stainless steels and duplex stainless steels have the Fe-rich corner of the Fe-Ni-Cr system as their compositional base.The calculation of isothermal sections for Fe-Cr-Ni system was carried out at different temperatures from 500℃ to 1700℃.The vertical section for Fe-C-12.5Cr-4.5Ni-0.5Si-0.6Mn system was also calculated.The phase relations in the Fe-Ni-Cr ternary system for the isothermal sections and ZG0Cr13Ni4Mo martensite stainless steel were investigated.