| Mechanical alloying of Al-8wt % Fe mixed powder has been studied. The effects of process control agent(stearic acid), the ratio of grinding media/powder and mechanical alloying times on the microstructure were investigated. Differential Scanning Calorimetry(DSC) measurements indicated that most of process control agent was dispersed through the body of each mechanically alloyed powder particle during milling. After 1000 minutes milling, mechanically alloyed particles were shown the character of steady state. At steady state the particles have a uniform size distribution, a saturation hardness, an equiaxed shape, a composite structure and a chemical homogeneity. The intermetallic compound phase of Al₃Fe was identified by Xray diffraction analysis. |
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