Abstract:Hypereutectic Al-27Si and Al-50Si alloys have been bonded and the influence of the bonding temperature on the microstructure and properties of the joints investigated. The results showed that Al-27Si/Al-50Si joints were bonded metallurgically with wide soldering seams containing a-Al, b-Si, and h-Al 2 Cu eutectic phases. The amount of h-Al 2 Cu eutectic phase gradually decreased and the bonding interface became nonplanar with increasing temperature. Many cracks formed in the Si phases on the Al-50Si side becau… Show more
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