발간논문

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Vol.38, No.7, 892 ~ 899, 2000
Title
Pesearch Paper / Mechanical Behaviors : Fabrication of Hypereutectic Al - Si - X Alloy via Spray Forming & Extrusion and Its Feasibility Tests for a Propeller Shaft Application
석현광Hyun Kwang Seok,이호인Ho In Lee,김병조Byung Jo Kim,이재철Jae Chul Lee
Abstract
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.
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