Abstract
In this work, microstructural and thermal properties of the mechanically alloyed complex Al₆₀Cu₂₀Ni₁₅Ti₅ alloy have been investigated by a combination of differential thermal analysis (DTA), X-ray diffraction (XRD), and scanning electron microscope with energy dispersive X-ray detection (SEM/EDX). The results showed that the new Al₆₀Cu₂₀Ni₁₅Ti₅ alloy in metastable multiphase formation was produced by milling for 50 h. As the milling time increased from 50 h to 100 h, more homogeneous structure and intermetallic phases such as Al₃Ni and Al₂Cu were observed, and also grain size decreased. Besides, the maximum microhardness value in pressed and sintered alloy samples was found to be 560 HV.

Key words
Al-based alloys, thermal properties, microstructure, mechanical alloying

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