Aluminum-scandium alloys and uses thereof

C - Chemistry – Metallurgy – 22 – C

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C22C 21/00 (2006.01) B23K 35/28 (2006.01) C22C 21/02 (2006.01) C22C 21/10 (2006.01) C22C 21/16 (2006.01)

Patent

CA 2190951

A method for assembling a structure us ing a filler alloy which includes aluminum and scandium. The method generally includes se- lecting parts for the structure which are formed from aluminum and or an aluminum alloy and welding the same together with the aluminum- scandium filler alloy. Similar to the filler al- loy, the parts may also include scandium. In one embodiment, the filler alloy and/or the parts further include zirconium. A method for assembling a bicycle frame is also provided. The method includes the steps of forming a first tube, at least a portion of which com- prises scandium, forming a second tube, at least a portion of which comprises scandium, and joining the first and second tubes together. A number of aluminum-based alloys are also disclosed which possess enhanced properties. The alloys include scandium in combination with other alloying elements such as, for exam- ple, zirconium, copper, magnesium and silicon. Furthermore, applications for aluminum alloys containing scandium with or without zirconium additions. Such modified aluminum alloys pos- sess enhanced properties and exhibit improved processing characteristics, and, as such, are es- pecially suited for use in recreational and ath- letic structures and components, and in cer- tain aerospace, ground transportation and ma- rine structures and components.

Procédé d'assemblage d'une structure à l'aide d'un alliage d'apport comportant de l'aluminium et du scandium, qui consiste généralement à sélectionner des parties de structure constituées d'aluminium et/ou d'un alliage d'aluminium et à souder lesdites parties ensemble avec un alliage d'apport aluminium-scandium. A l'instar de l'alliage d'apport, les parties peuvent également contenir du scandium. Dans un mode de réalisation, l'alliage d'apport et/ou les parties contiennent aussi du zirconium. Un procédé d'assemblage d'un cadre de bicyclette est également décrit. Ledit procédé consiste à former un premier tube, dont au moins une partie contient du scandium, à former un second tube, dont au moins une partie contient du scandium, et à assembler les premier et second tubes ensemble. Un certain nombre d'alliages à base d'aluminium qui possèdent des propriétés améliorées sont également décrits. Les alliages comportent du scandium en combinaison avec d'autres métaux d'alliage tels que, par exemple, du zirconium, du cuivre, du magnésium et du silicium. De plus, des applications pour des alliages d'aluminium contenant du scandium avec ou sans ajout de zirconium sont décrites. Ces aluminiums modifiés possèdent des propriétés et des caractéristiques de traitement améliorées et, en tant que tels, conviennent particulièrement pour les structures et éléments de loisirs et de gymnastique, ainsi que dans certains éléments et structures aérospatiaux, de transport au sol et marins.

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