Modeling of Nucleation and Growth of M23C6 Carbide in Multi-component Fe-based Alloy

材料科学技术（英）, 2011, 27(8): 725-728.

Modeling of Nucleation and Growth of M23C6 Carbide in Multi-component Fe-based Alloy

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1.Department of Materials Science and Engineering, Shanghai University, Shanghai 200072, China

2.Department of Materials Science and Engineering, Shanghai University, Shanghai 200072, China

3.Department of Materials Science and Engineering, Shanghai University, Shanghai 200072, China

4.Department of Materials Science and Engineering, Shanghai University, Shanghai 200072, China

5.Department of Metallurgy and Materials Engineering, Katholieke Uniersiteit Leuven, Kasteelpark Arenberg 44, B-3001 Heverlee, Belgium

6.Department of Metallurgy and Materials Engineering, Katholieke Uniersiteit Leuven, Kasteelpark Arenberg 44, B-3001 Heverlee, Belgium

7.Department of Metallurgy and Materials Engineering, Katholieke Uniersiteit Leuven, Kasteelpark Arenberg 44, B-3001 Heverlee, Belgium

基金项目: This study was financially supported by the National Natural Science Foundation of China(50971137;50934011)

关键词： M23C6 , 碳化物 , 多组分 , Fe基合金 , 生长 , 三维图像显示 , 成核 , 建模

Modeling of Nucleation and Growth of M23C6 Carbide in Multi-component Fe-based Alloy

Keywords： Nucleation and growth , M23C6 , Three-dimensional atom probe （3DAP） , Modeling ,

Three-dimensional atom probe （3DAP） technique has been used to study the nucleation and growth of M23C6 carbide in a supersaturated multi-component Fe-based alloy aged at 800℃. 3D images indicate that the radius of M23C6 carbide after ageing for 10 min is about 9 nm. Concentration profiles of alloy elements in the carbide are also obtained. Combined with PANDAT and Thermo-Calc software, attempts to model the early stages of precipitation are present. The calculated particle size and composition of M23C6 carbide is in good agreement with 3DAP data.

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