%0 journal article
%@ 0257-8972
%A Hazra, M., Mondal, A.K., Kumar, S., Blawert, C., Dahotre, N.B.

%D 2009
%J Surface and Coatings Technology
%N 16
%P 2292-2299 
%R doi:10.1016/j.surfcoat.2009.02.022
%T Laser surface cladding of MRI 153M magnesium alloy with (Al+Al2O3)
%U https://doi.org/10.1016/j.surfcoat.2009.02.022
16 
%X Laser surface cladding was carried out on a creep-resistant MRI 153M magnesium alloy with a mixture of Al and Al2O3 powders using a pulsed Nd:YAG laser at scan speeds of 21, 42, 63 and 84 mm/s. The Al2O3 particles partially or completely melted during laser irradiation and re-solidified with irregular shapes in the size range of 5–60 µm along with a few islands as large as 500 µm, within the grain-refined Mg-rich dendritic matrix. More than an order of magnitude improvement in wear resistance after cladding was attributed to the presence of ultra-hard Al2O3 particles, increased solid solubility of Al and other alloying elements, and a very fine dendritic microstructure as a result of rapid solidification in the cladded layer. However, corrosion resistance of the laser cladded alloy was reduced by almost an order of magnitude compared to that of the as-cast alloy mainly due to the presence of cracks and pores in the cladded layer.