Fabrication of the wear resistant Al-25Si-X alloy via spray forming and feasibility tests for a cylinder liner application

摘要

A comprehensive methodology to consolidate thehypereutectic Al-25Si-X alloy via spray forming was investigatedin an attempt to judge the feasibility of this alloy for theapplication to wear resistant components. Billets having desiredshape and microstructures were fabricated using formingparameters obtained from numerical calculations. Prior to tubeextrusion of the spray formed billets, effects of various extrusionconditions, such as extrusion ratio, die temperature, and dieconfiguration, on microstructures of the billet were studied. Basedon results obtained from the preliminary extrusion tests, theformed billets were then hot extruded into a tubular shape.Various material properties of the extruded billet were measuredand compared with the other candidate materials for anti-wear applications.