Abstract
Magnesium alloys possess a combination of low specific weight and high specific strength that makes them attractive to a range of industries such as the automotive and aerospace. A hindrance to their greater application is their poor wear and corrosion resistance compared to that of steel or aluminium alloys. This is due to their relatively low surface hardness and high chemical affinity for numerous elements. This study investigates the microstructure and wear characteristics of clad layers made of a mixture of Al-12%Si (40%) and tungsten carbide (60%). The claddings were deposited on creep resistant AS21 magnesium alloy using a high power Nd:YAG laser.Magnesium alloys possess a combination of low specific weight and high specific strength that makes them attractive to a range of industries such as the automotive and aerospace. A hindrance to their greater application is their poor wear and corrosion resistance compared to that of steel or aluminium alloys. This is due to their relatively low surface hardness and high chemical affinity for numerous elements. This study investigates the microstructure and wear characteristics of clad layers made of a mixture of Al-12%Si (40%) and tungsten carbide (60%). The claddings were deposited on creep resistant AS21 magnesium alloy using a high power Nd:YAG laser.
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