A hypereutectic Al-Si-X alloy was fabricated via spray forming & extrusion to judge the feasibility of the alloy for the application to a propeller shaft, which needs high specific strength as well as high specific modulus. The microstructural evoluti...
A hypereutectic Al-Si-X alloy was fabricated via spray forming & extrusion to judge the feasibility of the alloy for the application to a propeller shaft, which needs high specific strength as well as high specific modulus. The microstructural evolution of spray formed hypereutectic Al-Si-X alloy during extrusion was studied. The effects of the Si contents, additional elements and heat treatments on the Young's modulus and mechanical properties (UTS, elongation) were also investigated. In additions, the feasibility of the hypereutectic Al-Si-X alloy as a propeller shafts materials was evaluated with respect to S45C steel, 6061 aluminum alloy and Duralcan composite which are being used as a commercialized propeller shaft materials. The hypereutectic Al-Si-X alloy was regarded to have a good competition with S45C steel and 6061 aluminum alloy in reducing a weight and with Duralcan composite in reducing a fabrication cost.