Formulae of Equilibrium Solid Solubility of Fe4N and Nitrogen in Iron Matrix

雍岐龙; 陈明昕; 赵昆渝; 曹建春

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Formulae of Equilibrium Solid Solubility of Fe4N and Nitrogen in Iron Matrix

更新时间：2026-01-21

- Formulae of Equilibrium Solid Solubility of Fe4N and Nitrogen in Iron Matrix
- Special Steel Vol. 28, Issue 1, Pages: 4-6(2007)
- 作者机构：
  
  1. 钢铁研究总院结构材料所,北京,100081
  2. 昆明理工大学,昆明,650093
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：12 June 2006，
  
  Online First：12 January 2023，
  
  Published：12 January 2007
- 稿件说明：
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雍岐龙, 陈明昕, 赵昆渝, et al. Formulae of Equilibrium Solid Solubility of Fe4N and Nitrogen in Iron Matrix[J]. Special Steel, 2007, 28(1): 4-6.
DOI：

雍岐龙, 陈明昕, 赵昆渝, et al. Formulae of Equilibrium Solid Solubility of Fe4N and Nitrogen in Iron Matrix[J]. Special Steel, 2007, 28(1): 4-6. DOI：

摘要

根据Thermo-Calc和相关文献的测试数据

推导出Fe

N在奥氏体和铁素体中的平衡固溶度公式分别：log[N

]

= 0.940 - 479.4/T

log[ N

]

= 1.074 - 1 838/T。同时考虑Fe

N的形成自由能而推导出氮(气)在奥氏体和铁素体中的平衡固溶度公式分别为：log[N

]

= -2.752 + 1321/T

log[N

]

= -1.560-1214/T。

Abstract

According to measured solubility data of Thermo-Calc and concerned references

the equilibrium solid solubility formulae of Fe

N in austenite and in ferrite have been derived respectively as log[N

]

= 0.940 -479.4/T and log[N

]

= 1.074 - 1 838/T. With considering free energy of Fe

N formation

the equilibrium solid solubility formulae of nitrogen (gas) in austenite and in ferrite have been derived respectively as log[N

]

= -2.752 + 1 321/T and log[N

]

= -1.560-1 214/T.

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