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Combustion Characteristics of Mechanically Alloyed Ultrafine‐Grained Al‐Mg Powders

The combustion characteristics of ultrafine Al-Mg alloy powder particles, produced by mechanical alloying methods, and sieved to well-defined size ranges (35 to 100 μm) were investigated. The ignition and burning times and their size-dependence were determined using time-resolved images of particles burned in the post-flame zone. It was observed that both the ignition and burning times increased with increasing particle size.