Investigation on Melting Phenomena Generated during Dynamic Formation of Al-Based Coating on Magnesium Alloy

Abstract:

The deposition behavior of Al-Si particle on magnesium alloy by supersonic particles deposition was investigated by numerical stimulation. The results demonstrated that critical velocity of sprayed particle reduced as its initial temperature increased; Temperature at interface increased rapidly and reached to the value higher than melting point of Al-Si particle and ZM5 magnesium substrate, which predicts the melting possibility for collision interface. Morphology and microstructure of Al-Si coating on magnesium alloy were analyzed by SEM and TEM. The results indicated that there existed large amount of nano/micro-scale grains produced by sputtering and impacting of the melting Al-Si jet. And obvious interface belt had been formed at brim of the deposited particles, nanocrystalline phase region generated by rapid solidification of melting Al-Si particles, justified the occurrence of interface melting phenomena.

• Periodical: Applied Mechanics and Materials (Volumes 488-489)
• Pages: 189-192
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.488-489.189
• Online since: January 2014
• Authors: Xiao Ming Wang*, Sheng Zhu, Xue Qiang Feng, Yu Xiang Liu
• Keywords: Magnesium Alloy, Melting Phenomena, Microstructure, Number Simulation

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