Thermodynamic description of the Fe-Cu-C system

被引：19

作者：

Chen, Leilei ^{[1
,2
]}

Zhang, Zhenyu ^{[1
]}

Huang, Yeyan ^{[2
]}

Cui, Junfeng ^{[1
]}

Deng, Zixuan ^{[2
]}

Zou, Houke ^{[2
]}

Chang, Keke ^{[2
]}

机构：

[1] Dalian Univ Technol, Minist Educ, Key Lab Precis & Nontradit Machining Technol, Dalian 116024, Peoples R China

[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Engn Lab Adv Energy Mat, Ningbo 315201, Zhejiang, Peoples R China

来源：

CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY | 2019年 / 64卷

基金：

中国国家自然科学基金;

关键词：

Fe-Cu-C system; Phase diagram; Thermodynamic optimization; CARBON-SATURATED IRON; QUASI-CHEMICAL MODEL; PHASE-EQUILIBRIA; COPPER-IRON; ACTIVITY-COEFFICIENT; NI-C; SOLUBILITY; ALLOYS; CEMENTITE; COBALT;

D O I：

10.1016/j.calphad.2018.12.001

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

As an addition to the iron-carbon alloys to improve their strength and corrosion resistance, copper is of great importance for iron and steel industry and the Fe-Cu-C system has been extensively investigated. Aiming at a thermodynamic basis to investigate the effect of Cu addition on the Fe-C system, the CALPHAD (CALculation of PHAse Diagrams) approach was utilized to assess the ternary Fe-Cu-C system including the binary Cu-C and Fe-C systems. The Redlich-Kister model, instead of the Modified Quasichemical Model (MQM) in previous work, was used to model the liquid phase. The parameters of the liquid phase in the Fe-C system from previous work have been slightly modified to fit better with new experimental data at high temperatures. One Fe/Cu/FeC0.05 (in wt%) diffusion couple was designed to further determine the phase equilibria of the ternary system. A set of self-consistent parameters for the Fe-Cu-C system was obtained after thermodynamic optimization. Good correspondence between calculated and experimental values of phase diagrams, thermodynamic properties, and liquidus projections has been achieved by the present thermodynamic description.

引用

页码：225 / 235

页数：11

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