ECAE MATERIALS FOR HIGH STRENGTH ALUMINUM ALLOYS
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IPC분류정보
국가/구분
United States(US) Patent
공개
국제특허분류(IPC7판)
C22F-001/053
C22F-001/047
C22F-001/043
C22C-021/10
C22C-021/06
C22C-021/02
출원번호
US-0824149
(2017-11-28)
공개번호
US-0155811
(2018-06-07)
발명자
/ 주소
Ferrasse, Stephane
Strothers, Susan D.
Underwood, Patrick K.
Ruggiero, Marc D.
Meyer, Wayne D.
Feng, Lucia M.
Alford, Frank C.
출원인 / 주소
Ferrasse, Stephane
인용정보
피인용 횟수 :
0인용 특허 :
0
초록▼
A method of forming a high strength aluminum alloy. The method comprises subjecting an aluminum material containing at least one of magnesium, manganese, silicon, copper, and zinc at a concentration of at least 0.1% by weight to an equal channel angular extrusion (ECAE) process. The method produces
A method of forming a high strength aluminum alloy. The method comprises subjecting an aluminum material containing at least one of magnesium, manganese, silicon, copper, and zinc at a concentration of at least 0.1% by weight to an equal channel angular extrusion (ECAE) process. The method produces a high strength aluminum alloy having an average grain size from about 0.2 μm to about 0.8 μm and a yield strength from about 300 MPa to about 650 MPa.
대표청구항▼
1. A method of forming a high strength aluminum alloy, the method comprising: heating an aluminum material containing aluminum as a primary component and at least one of magnesium, manganese, silicon, copper, and zinc as a secondary component at a concentration of at least 0.1% by weight to a temper
1. A method of forming a high strength aluminum alloy, the method comprising: heating an aluminum material containing aluminum as a primary component and at least one of magnesium, manganese, silicon, copper, and zinc as a secondary component at a concentration of at least 0.1% by weight to a temperature from about 400° C. to about 550° C. to form a heated aluminum material;quenching the heated aluminum material to room temperature to form a cooled aluminum material;subjecting the cooled aluminum material to an equal channel angular extrusion (ECAE) process while maintaining the cooled aluminum material at a temperature from about 20° C. to about 200° C. to form a high strength aluminum alloy, wherein the high strength aluminum alloy has an average grain size from about 0.2 μm to about 0.8 μm in diameter and a yield strength from about 300 MPa to about 650 MPa. 2. The high strength aluminum alloy of claim 1, wherein the aluminum material contains from about 2.0 wt. % to about 7.5 wt. % zinc and from about 0.5 wt. % to about 4.0 wt. % magnesium. 3. The high strength aluminum alloy of claim 1, wherein the aluminum material contains from about 0.3 wt. % to about 3.0 wt. % magnesium and from about 0.2 wt. % to about 2.0 wt. % silicon. 4. The high strength aluminum alloy of claim 1, wherein the aluminum material contains from about 0.5 wt. % to about 7.0 wt. % copper. 5. The high strength aluminum alloy of claim 1, wherein the aluminum material contains from about 0.5 wt. % to about 7.0 wt. % magnesium and from about 0.1 wt. % to about 2.0 wt. % manganese. 6. The method of claim 1, wherein the ECAE process is completed within 24 hours of the quenching step. 7. The method of claim 1, wherein the ECAE process includes at least two ECAE passes. 8. The method of claim 1, further comprising subjecting the cooled aluminum material to an aging step before the ECAE process. 9. The method of claim 8, wherein the aging step includes heating the cooled aluminum material to a temperature from about 80° C. to about 200° C. for from about 15 minutes to about 40 hours. 10. The method of claim 1, wherein the aluminum material containing aluminum as a primary component and zinc and magnesium as secondary components has a yield strength from about 400 MPa to about 650 MPa. 11. The method of claim 1, wherein the aluminum material containing aluminum as a primary component and magnesium and silicon as secondary components has a yield strength from about 300 MPa to about 600 MPa. 12. The method of claim 1, wherein the aluminum material containing aluminum as a primary component and copper as a secondary component has a yield strength from about 300 MPa to about 600 MPa. 13. The method claim 1, wherein the high strength aluminum alloy containing aluminum a primary component and magnesium and manganese as secondary components has a yield strength from about 300 MPa to about 500 MPa. 14. A high strength aluminum alloy material comprising: an aluminum material containing at least one of magnesium, manganese, silicon, copper, and zinc at a concentration of at least 0.1% by weight, whereinthe aluminum material has an average grain size from about 0.2 μm to about 0.8 μm in diameter; andan average yield strength from about 300 MPa to about 650 MPa. 15. The high strength aluminum alloy of claim 14, wherein the aluminum material contains aluminum as a primary component and at least one of magnesium, manganese, silicon, copper, and zinc as a secondary component. 16. The high strength aluminum alloy of claim 14, wherein the aluminum material containing aluminum as a primary component and zinc and magnesium as secondary components has a yield strength from about 400 MPa to about 650 MPa. 17. The high strength aluminum alloy of claim 14, wherein the aluminum material containing aluminum as a primary component and magnesium and silicon as secondary components has a yield strength from about 300 MPa to about 600 MPa. 18. The high strength aluminum alloy of claim 14, wherein the aluminum material containing aluminum as a primary component and copper as a secondary component has a yield strength from about 300 MPa to about 650 MPa. 19. The high strength aluminum alloy of claim 14, wherein the aluminum material containing aluminum a primary component and magnesium and manganese as secondary components has a yield strength from about 300 MPa to about 550 MPa. 20. A device case formed of the high strength aluminum alloy of claim 14.
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