Metal treatment – Stock – Aluminum base
Patent
1984-07-19
1988-05-10
Dean, R.
Metal treatment
Stock
Aluminum base
75249, 164423, 164463, 419 66, C22C 2100
Patent
active
047433175
ABSTRACT:
The invention provides an aluminum based alloy consisting essentially of the formula Al.sub.bal Fe.sub.a X.sub.b, wherein X is at least one element selected from the group consisting of Zn, Co, Ni, Cr, Mo, V, Zr, Ti, Y, Si and Ce, "a" ranges from about 7-15 wt %, "b" ranges from about 1.5-10 wt % and the balance is aluminum. The alloy has a predominately microeutectic microstructure.
The invention also provides a method and apparatus for forming rapidly solidified metal, such as the metal alloys of the invention, within an ambient atmosphere. Generally stated, the apparatus includes a moving casting surface which has a quenching region for solidifying molten metal thereon. A reservoir holds molten metal and has orifice means for depositing a stream of molten metal onto the casting surface quenching region. A heating mechanism heats the molten metal contained within the reservoir, and a gas source provides a non-reactive gas atmosphere at the quenching region to minimize oxidation of the deposited metal. A conditioning mechanism disrupts a moving gas boundary layer carried along by the moving casting surface to minimize disturbances of the molten metal stream that would inhibit quenching of the molten metal on the casting surface at a quench rate of at least about 10.sup.6 .degree. C./sec.
Particles composed of the alloys of the invention can be heated in a vacuum and compacted to form a consolidated metal article have high strength and good ductility at both room temperature and at elevated temperatures of about 350.degree. C. The consolidated article is composed of an aluminum solid solution phase containing a substantially uniform distribution of dispersed intermetallic phase precipitates therein. These precipitates are fine intermetallic measuring less than about 100 nm in all dimensions thereof.
REFERENCES:
patent: 2963780 (1960-12-01), Lyle, Jr. et al.
patent: 2966731 (1961-01-01), Towner et al.
patent: 2966732 (1961-01-01), Towner et al.
patent: 2966733 (1961-01-01), Towner et al.
patent: 2966734 (1961-01-01), Towner et al.
patent: 2966735 (1961-01-01), Towner et al.
patent: 2966736 (1961-01-01), Towner et al.
patent: 2967351 (1961-01-01), Roberts et al.
patent: 2994947 (1961-08-01), Towner et al.
patent: 3004331 (1961-10-01), Towner et al.
patent: 3462248 (1969-08-01), Roberts et al.
patent: 3625677 (1968-12-01), Jones
patent: 3899820 (1975-08-01), Read et al.
patent: 4282921 (1981-08-01), Liebermann
patent: 4347076 (1982-08-01), Ray et al.
patent: 4379719 (1983-04-01), Hildeman et al.
Business Communication by Marko Materials, Inc., 8/12/81.
P. P. Millan, Jr., "Applications of High-Temperature Powder Aluminum Alloys to Small Gas Turbines", Mar. 1983, pp. 76-81.
C. M. Adam, "Structure/Property Relationships and Applications of Rapidly Solidified Aluminum Alloys", Copyright 1982, pp. 411-422.
H. Jones, "Observations on a Structural Transition in Aluminum Alloys Hardened by Rapid Solidification", Mar. 1969, pp. 1-18.
M. H. Jacobs, et al., "A Study of Microstructure and Phase Transformations in an Annealed, Rapidly Quenched, Al-8 wt % Fe Alloy", 1970, pp. 18.1-18.16.
G. Thursfield, et al., "Elevated Temperature Mechanical Properties of a Rapidly Quenched Al-8 wt % Fe Alloy", 1970, pp. 19.1-19.6.
Chipko Paul A.
Okazaki Kenji
Skinner David J.
Allied Corporation
Buff Ernest D.
Dean R.
Fuchs Gerhard H,.
LandOfFree
Aluminum-transition metal alloys having high strength at elevate does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Aluminum-transition metal alloys having high strength at elevate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aluminum-transition metal alloys having high strength at elevate will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1318819