Bismuth added to Al-Si alloy enables low friction. (Metals).

Advanced Materials & Processes,  December, 2002  

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Heat-treatable aluminum-silicon alloys with added bismuth have reportedly been developed for continuous self-lubricity, low friction, and high seizure loads by Advanced Casting Technologies (ACT) Inc., Troy, Mich. Aluminum alloys DHT-3 and DHT-4 were described in a paper presented by ACT president Muftau Alabi at the 2002 ASM Materials Solutions Conference in Columbus in October.

The paper was titled "DHT Alloys: New Self-Lubricating, Wear and Gall-Resistant, High-Strength Aluminum Alloys." DHT-3 contains silicon that is mostly eutectic, with bismuth homogeneously ...

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