J Mater Sci Technol ›› 1997, Vol. 13 ›› Issue (6): 515-517.

• Articles • Previous Articles     Next Articles

Microstructural Characteristics and Stability in a Rapidly Solidified Al-Fe-Nb-Si Alloy

Shaokang GUAN and Ningfu SHEN(Dept. of Materials Science and Engineering, Zhengzhou University of Technology, Zhengzhou 450002, China) Yulin GONG(Central China Petroleum and Natural Gas Development Corporation of Henan Province, Zhengzhou 450002, China)Ha   

  • Received:1997-11-28 Revised:1997-11-28 Online:1997-11-28 Published:2009-10-10

Abstract: The microstructure and stability in a rapidly solidified Al-Fe-Nb-Si alloy were studied by using transmission electron microscopy (TEM) with energy dispersive X-ray spectrometry (EDXS) and X-ray difFraction technique. It is shown that the addition of Nb to Al-Fe-Si alloy may increase undercooling of melt, and form the featureless zone structure, the size of the intercellular phases and the distance betWeen intercellulars of Al-Fe-Nb-Si alloy are two times smaller than that of Al-Fe-V-Si alloy under the same conditions. Further, the microstructure of the featureIess zone has the better thermal stability after annealing at 623 K for 24 h.