Atomized picoscale composition aluminum alloy and method thereof
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C22C-001/04
B22F-003/12
B22F-003/20
C22C-032/00
C22C-021/00
출원번호
US-0630141
(2015-02-24)
등록번호
US-9551048
(2017-01-24)
발명자
/ 주소
Haynes, III, Thomas G.
Walcher, Martin
Balog, Martin
출원인 / 주소
TECNIUM, LLC
대리인 / 주소
The Belles Group, P.C.
인용정보
피인용 횟수 :
1인용 특허 :
14
초록▼
The invention is a process for manufacturing a nano aluminum/alumina metal matrix composite and composition produced therefrom. The process is characterized by providing an aluminum powder having a natural oxide formation layer and an aluminum oxide content between about 0.1 and about 4.5 wt. % and
The invention is a process for manufacturing a nano aluminum/alumina metal matrix composite and composition produced therefrom. The process is characterized by providing an aluminum powder having a natural oxide formation layer and an aluminum oxide content between about 0.1 and about 4.5 wt. % and a specific surface area of from about 0.3 and about 5 m2/g, hot working the aluminum powder, and forming a superfine grained matrix aluminum alloy. Simultaneously there is formed in situ a substantially uniform distribution of nano particles of alumina. The alloy has a substantially linear property/temperature profile, such that physical properties such as strength are substantially maintained even at temperatures of 250° C. and above.
대표청구항▼
1. A process for making an aluminum nano-composite comprising: a) providing an aluminum powder that has a particle size less than about 30 microns and a microstructure that has a first grain size, the aluminum powder further comprising a naturally forming surface layer of aluminum oxide and;b) hot w
1. A process for making an aluminum nano-composite comprising: a) providing an aluminum powder that has a particle size less than about 30 microns and a microstructure that has a first grain size, the aluminum powder further comprising a naturally forming surface layer of aluminum oxide and;b) hot working the aluminum powder at a temperature below the recrystallization temperature of the aluminum powder, thereby reducing the first grain size of the aluminum powder by a factor of at least 10 to form a second grain size; andc) simultaneously with step b), uniformly redistributing the aluminum oxide throughout the microstructure of the aluminum powder to form the aluminum nano-composite. 2. The process of claim 1, wherein the aluminum oxide of step a) has a thickness ranging from about 3 nanometers to about 7 nanometers. 3. The process of claim 1, wherein the second grain size is about 200 nm. 4. The process of claim 1, wherein the aluminum powder of step a) has a d90 particle size of about 2.3 microns. 5. The process of claim 1, wherein the aluminum powder of step a) has a d50 particle size of about 1.3 microns. 6. The process of claim 1, wherein the aluminum powder of step a) has a d10 particle size of about 0.6 microns. 7. The process of claim 1, wherein following step c) the nano-composite is mixed with a ceramic particulate to form a powder mixture, the ceramic particulate is selected from the group consisting of silica, silicon carbide, boron carbide, boron nitride, titanium oxide, titanium diboride, and mixtures thereof. 8. The process of claim 7, wherein the powder mixture comprises about 5 wt. % to about 40 wt. % of the ceramic particulate. 9. The process of claim 8, wherein the ceramic particulate is boron carbide having a particle size distribution of 100% less than about 250 microns and the boron carbide is nuclear grade. 10. The process of claim 1, wherein the aluminum powder of step a) is formed by a powder atomization manufacturing process and the naturally forming surface layer of aluminum oxide has a thickness ranging from about 3 nanometers to about 7 nanometers. 11. The process of claim 1, wherein the process is free of mechanical alloying. 12. An aluminum nano-composite comprising: aluminum microstructure, andaluminum oxide particleswherein the aluminum oxide particles are uniformly distributed throughout aluminum microstructure and the aluminum microstructure has a grain size of about 200 nanometers. 13. The aluminum nano-composite of claim 12, wherein the aluminum nano-composite has a particle size that is less than about 30 microns. 14. The aluminum nano-composite of claim 13, wherein the particle size of the nano-composite has a d90 of about 2.3 microns. 15. The aluminum nano-composite of claim 13, wherein the particle size of the nano-composite has a d50 that is about 1.3 microns. 16. The aluminum nano-composite of claim 13, wherein the particle size of the nano-composite has a d10 that is about 0.6 microns. 17. A powder blend comprising: an aluminum nano-composite having an aluminum microstructure, the aluminum nano-composite comprising aluminum oxide particles uniformly distributed throughout aluminum microstructure and the aluminum microstructure having a grain size of about 200 nanometers; andabout 5 wt. % to about 40 wt. % of a ceramic particulate that is selected from the group consisting of silica, silicon carbide, boron carbide, boron nitride, titanium oxide, titanium diboride, and mixtures thereof. 18. The powder blend of claim 17, wherein the aluminum nano-composite has a particle size that is less than about 30 microns. 19. The powder blend of claim 18, wherein the ceramic particulate is boron carbide having a particle size distribution of 100% less than about 250 microns and the boron carbide is nuclear grade.
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이 특허에 인용된 특허 (14)
Sakaguchi, Yasuhiro; Saida, Tomikane; Murakami, Kazuo; Shibue, Kazuhisa; Tokizane, Naoki; Takahashi, Tatsumi, Aluminum composite material having neutron-absorbing ability.
Oschmann Edward L. ; Haynes Thomas G., Extrusion fabrication process for discontinuous carbide particulate metal matrix composites and super hypereutectic A1/Si.
Sawtell Ralph R. (Monroeville PA) Hunt ; Jr. Warren H. (Export PA) Rodjom Thomas J. (Murrysville PA) Hilinski Erik J. (Cleveland Heights OH) Milsom John H. (Apollo PA), Method of producing structural metal matrix composite products from a blend of powders.
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