ALUMINUM ALLOY DOPED WITH SCANDIUM, ZIRCONIUM AND ERBIUM

PROBLEM TO BE SOLVED: To provide: an aluminum alloy as an alternative to expensive aluminum-zirconium-scandium alloys that exhibit promising strength and creep resistance at temperatures above 300°C; and a method of producing the same.SOLUTION: An aluminum alloy comprises: 0.0394 to 0.1 at.% of scan...

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Bibliographische Detailangaben
Hauptverfasser:	BITA GHAFFARI, CHRISTOPHER BOOTH-MORRISON, DAVID N SEIDMAN, CHRISTOPHER S HUSKAMP, DAVID C DUNAND, JAMES M BOILEAU
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ALLOYS 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 FERROUS OR NON-FERROUS ALLOYS METALLURGY PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide: an aluminum alloy as an alternative to expensive aluminum-zirconium-scandium alloys that exhibit promising strength and creep resistance at temperatures above 300°C; and a method of producing the same.SOLUTION: An aluminum alloy comprises: 0.0394 to 0.1 at.% of scandium; 0.0198 to 0.1 at.% of zirconium; 0.0038 to 0.05 at.% of erbium; and the balance comprising aluminum and less than detection limits of impurities. Alternatively, an aluminum alloy further comprises 0.033 to 0.1 at.% of silicon. In an aluminum alloy, iron is present as an impurity.SELECTED DRAWING: None 【課題】３００℃を超える温度で有望な強度および耐クリープ性を示すが、高価格であるアルミニウム-ジルコニウム-スカンジウム合金の代替となるアルミニウム合金、及びその製造方法の提供【解決手段】０．０３９４〜０．１ａｔ．％のスカンジウムと、０．０１９８〜０．１ａｔ．％のジルコニウムと、０．００３８〜０．０５ａｔ．％のエルビウムと、残部としてアルミニウム及び検出限界未満の不純物と、からなるアルミニウム合金。又は、更に０．０３３〜０．１ａｔ．％のケイ素を含有するアルミニウム合金。不純物として、鉄が存在するアルミニウ合金。【選択図】なし