[특허]Functionally graded metal matrix composite sheet

[미국특허] Functionally graded metal matrix composite sheet 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B22D-011/06 B22D-019/14
출원번호	US-0913999 (2010-10-28)
등록번호	US-8381796 (2013-02-26)
발명자 / 주소	Tomes, Jr., David A. Wyatt-Mair, Gavin F. Timmons, David W. Unal, Ali
출원인 / 주소	ALCOA Inc.
인용정보	피인용 횟수 : 0 인용 특허 : 99

초록 ▼

A method of making a functionally graded metal matrix composite (MMC) sheet having a central layer of particulate matter, the particulate matter having a size of at least about 30 microns. The method includes providing a molten metal containing particulate matter to a pair of advancing casting surfaces. Solidifying the molten metal while advancing the molten metal between the advancing casting surfaces to form a first solid outer layer, a second solid outer layer, and a semi-solid central layer having a higher concentration of particulate matter than either of the outer layers. Solidifying the central layer to form a solid metal product including a central layer sandwiched between the outer layers and withdrawing the metal product from between the casting surfaces.

대표청구항 ▼

1. A method comprising: providing a molten metal containing particulate matter to a pair of advancing casting surfaces;solidifying the molten metal while advancing the molten metal between the advancing casting surfaces to form: a first solid outer layer, a semi-solid central layer, and a second solid outer layer, wherein the particulate matter is present in each of the first layer,the central layer, and the second layer andwherein the central layer has a higher concentration of particulate matter than either of the first or second outer layers;solidifying said central layer to form a solid single-cast metal product; andwithdrawing the solid single-cast metal product from between the casting surfaces. 2. The method of claim 1, further comprising: hot rolling or cold rolling the solid single-cast metal product. 3. The method of claim 1, wherein a nip is formed between the pair of casting surfaces, and the pair of casting surfaces are surfaces of rolls. 4. The method of claim 1, wherein the product has a thickness ranging from about 0.08 to about 0.25 inches. 5. The method of claim 3, wherein the product exits the nip at a speed ranging from about 50 to about 300 feet per minute. 6. The method of claim 1, wherein one or more hot rolling or cold rolling passes is used to reduce the thickness of the solid metal product to a thickness ranging from about 0.004 inches to about 0.125 inches. 7. The method of claim 1, wherein the molten metal is an aluminum alloy and the particulate matter is selected from the group consisting of aluminum oxide; boron carbide; silicon carbide; boron nitride; and any non-metallic material. 8. The method of claim 1, wherein the solid metal product is selected from the group consisting of a sheet, a strip, and a panel. 9. The method of claim 1, wherein the solid metal product is an aluminum alloy product comprising: a first shell;a second shell; anda central layer disposed between the first shell and the second shell; wherein particulate matter is distributed across the first shell, the central layer, and the second shell in a concentration gradient;wherein the central layer has a higher concentration of particulate matter than the first shell and the second shell;wherein the particulate matter is selected from the group consisting of aluminum oxide, boron carbide, silicon carbide, boron nitride and any non- metallic material;wherein the aluminum alloy product has a thickness ranging from between about 0.004 inches to about 0.25 inches; andwherein the aluminum alloy product is selected from the group consisting of a single-cast aluminum alloy strip, a single-cast aluminum alloy sheet, a single-cast aluminum alloy panel, a single-cast aluminum alloy slab, a single-cast aluminum alloy foil, a single-cast aluminum alloy wire, a single-cast aluminum alloy rod, and a single-cast aluminum alloy bar. 10. The method of claim 1, wherein the particulate matter has a size of at least about 30 microns.

이 특허에 인용된 특허 (99) 인용/피인용 타임라인 분석

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