No 2, Vol. 4, 2001 
 

DEVELOPMENT OF AMORPHOUS AND NANO-ALUMINIDE DISPERSED
Al-MATRIX COMPOSITES BY MECHANICAL ALLOYING

P. Nandi¹, P. P. Chattopadhyay², S. K. Pabi¹ and I. Manna¹

¹ Metallurgical and Materials Engineering Department,
I. I. T., Kharagpur 721302, India
² Department of Metallurgy, B. E. College (D.U.),
Howrah 711103, India

Abstract

Mechanical alloying of Al65Cu35(xNbx (x = 5 - 25 at. % Nb) by planetary ball milling yields amorphous and/or nanocrystalline products. Microstructure of the milled product in different stages of milling has been characterized by x-ray diffraction, transmission electron microscopy and differential scanning calorimetry. The results indicate that the present alloys may yield completely/partially amorphous and/or nano-aluminide dispersed Al-rich nanocrystalline or amorphous matrix composites by controlled mechanical alloying.

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