Modeling of Nucleation and Growth of M23C6 Carbide in Multi-component Fe-based Alloy |
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| Authors: | Naqiong Zhu Yanlin He Wenqing Liu Lin Li Shuigen Huang Jef Vleugels Omer Van der Biest |
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| Affiliation: | aDepartment of Materials Science and Engineering, Shanghai University, Shanghai 200072, China;bDepartment of Metallurgy and Materials Engineering, Katholieke Uniersiteit Leuven, Kasteelpark Arenberg 44, B-3001 Heverlee, Belgium |
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| Abstract: | 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°C. 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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| Keywords: | Nucleation and growth M23C6 Three-dimensional atom probe (3DAP) Modeling |
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