Castable high temperature aluminium alloy

A dispersion strengthened castable aluminum-rare earth alloy provides high strength at elevated temperatures. In one example, the aluminum alloy includes approximately 1.0 to 20.0% by weight of gadolinium, approximately 0.1 to 10.0% total by weight of other rare earth elements including ytterbium, e...

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Bibliographische Detailangaben
1. Verfasser:	SONG, SHIHONG GARY
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS ALLOYS BLASTING CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS CHEMISTRY COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS ENGINE PLANTS IN GENERAL FERROUS OR NON-FERROUS ALLOYS GAS-TURBINE PLANTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METALLURGY NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PERFORMING OPERATIONS POWDER METALLURGY STEAM ENGINES TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	A dispersion strengthened castable aluminum-rare earth alloy provides high strength at elevated temperatures. In one example, the aluminum alloy includes approximately 1.0 to 20.0% by weight of gadolinium, approximately 0.1 to 10.0% total by weight of other rare earth elements including ytterbium, erbium or yttrium, and approximately 0.1 to 15.0% total by weight of minor alloy elements. In another example, the aluminum alloy includes approximately 1.0 to 20% by weight of ytterbium, approximately 0.1 to 10.0% total by weight of other rare earth elements including gadolinium, erbium or yttrium, and approximately 0.1 to 10.0% total by weight of minor alloy elements. After casting, the aluminum alloy is solidified and cooled. During solidification, the aluminum matrix excludes the rare earth alloy elements from the aluminum matrix, forming eutectic rare earth element-containing dispersoids that strengthen the aluminum matrix.