Modeling of Nucleation and Growth of M_(23)C_6 Carbide in Multi-component Fe-based Alloy  

作　　者：Naqiong Zhu Yanlin He Wenqing Liu Lin Li Shuigen Huang Jef Vleugels Omer Van der Biest 

机构地区：[1]Department of Materials Science and Engineering, Shanghai University, Shanghai 200072, China [2]Department of Metallurgy and Materials Engineering, Katholieke Uniersiteit Leuven, Kasteelpark Arenberg 44, B-3001 Heverlee, Belgium

出　　处：《Journal of Materials Science & Technology》2011年第8期725-728,共4页材料科学技术（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos. 50971137 and 50934011)

摘　　要：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.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.

关 键 词：Nucleation and growth M23C6 Three-dimensional atom probe （3DAP） MODELING 

分 类 号：TG142.73[一般工业技术—材料科学与工程] TG142.45[金属学及工艺—金属材料]