Development of Intermediate Layer for Diffusion Bonding of Continuous Alumina Fiber Reinforced Aluminum Matrix Composite(Materials, Metallurgy & Weldability)

概要

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In order to develop an intermediate layer for improving the diffusion bondability of a fiber reinforced aluminum matrix composite, an investigation has been made of critical factors controlling the diffusion bondability on a joint of a continuous alumina fiber reinforced aluminum matrix composite to a commercially pure aluminum and of effects of intermediate layers on the bondability. Al-Mg-Cu alloys containing 0.5-2% Mg and 3-4.5% Cu were employed as the intermediate layer, since Mg and Cu were reported to improve effectively the bondability of aluminum alloys. On the electropolished faying surface of the composite, fibers protruded from the matrix were formed, and had very harmful effects on the diffusion bondability of the composite, interfering with the intimate contact at the bond interface. The diffusion bondability of the composite to the aluminum was improved remarkably by the use of the intermediate layer of the Al-Cu-Mg alloy. The joint strength was increased significantly with Mg content of the intermediate layer.
大阪大学の論文