Change in Morphology and Some Properties of Ti-Al Powder Particles during Mechanical Alloying by Vibratory Ball Milling

Abstract

Mechanical alloying process of Ti-Al powder mixtures during vibratory milling was investigated by optical microscopy, SEM, X-ray diffraction analysis, XMA and micro-hardness measurement.Microstructures and phases of HIPed compacts of the milled powders were also investigated. As a result it was found that the amorphization behavior and morphology of the powder particles during milling were strongly dependent on the milling ball size. The phases and the microstructures of the HIPed compacts were affected by the starting powder composition.