Nucleation behavior of Al8Fe4Nd phase in rapidly solidified Al-Fe-V-Si-Nd alloy

被引：0
|
作者：
Pang, H. [1 ,2 ]
Jin, Z.H. [1 ]
Deng, J.N. [2 ]
Zeng, M.G. [2 ]
机构：
[1] Lab. for Mat. Sci., Shenyang Natil. Inst. of Metal Res., Chinese Acad. of Sci., Shenyang 110016, China
[2] Coll. of Sci., Northeastern Univ., Shenyang 110004, China
来源：
Acta Metallurgica Sinica (English Letters) | 2002年 / 15卷 / 05期
关键词：
Microstructure - Nucleation - Solidification - Transmission electron microscopy - X ray diffraction;
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摘要：
The microstructure of Al-Fe-V-Si-Nd alloy prepared by rapid solidification (RS) processing was studied by X-ray diffraction (XRD), transmission electron microscopy (TEM) and high resolution electron microscopy (HREM). The phase selection of the alloy during solidification and the nucleation behavior of Al8Fe4Nd phase were analyzed within the framework of time-dependent nucleation theory. The incubation time for Al8Fe4Nd phase was found shorter and the nucleation rate higher than those of α-Al. The results indicate the nucleation of Al8Fe4Nd phase is heterogeneous and the dispersoid of Al8Fe4Nd form as primary particles from the liquid, which is consistent with experimental observation.
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页码：453 / 459
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