On the Crystallization of Amorphous Ti-43at%Cu Powder Prepared by Mechanical Alloying

Abstract

Amorphous alloy powder of Ti-43at%Cu which is equivalent to eutectic composition was prepared by the mechanical alloying of the elemental titanium and copper powders by using a Spex Mixer/Mill model 8000. The crystallization reaction was observed by X-ray diffraction method and scanning electron microscopy. In the powder heated at 1123K, the results of electron microscopic observation showed that granular small particles were precipitated from the matrix. These particles grow with the increasing of heating period. It was presumed that these particles were CuTi₂ from the results of X-ray diffraction patterns.