Investigation Regarding Al-Al2O3 Composite Material Production and Its Weldability to Aluminum by Diffusion Welding

Authors : Halil ARIK, Ramazan SANDAL

Pages : 101-111

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Publication Date : 2017-12-27

Article Type : Research Paper

Abstract :In this study, firstly, a composite material aluminum based and containing 10 % Al 2 O 3 by weight is produced by powder metallurgy method.  In the production of composite samples being 10 mm in diameter and 15 mm in length, first Al and Al 2 O 3 powders were mixed for 2 hours in a high – energy   attritor and then pressed in a unidirectional axial die   at 800   MPa pressure. The pressed samples were sintered in a tubular furnace in a protective argon gas ambiance at 650°C for 2 hours. As for the second stage, the composite samples have been welded by diffusion welding to an Al block material in 99.5% purity and in the same dimensions at 5 MPa – constant load at different temperatures and durations by diffusion welding. The strength values of welded samples were determined by making shear tests from the welding zones versus composite material.
Keywords : Powder metallurgy, Composite, Diffusion welding