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ASTM Selected Technical Papers
Rapidly Solidified Powder Aluminum Alloys
By
ME Fine
ME Fine
1
Northwestern University
,
Evanston, IL 60201
;
symposium cochairman and editor
.
Search for other works by this author on:
EA Starke, Jr Jr
EA Starke, Jr Jr
2
University of Virginia
,
Charlottesville, VA 22901
;
symposium cochairman and editor
.
Search for other works by this author on:
ISBN-10:
0-8031-0442-1
ISBN:
978-0-8031-0442-6
No. of Pages:
554
Publisher:
ASTM International
Publication date:
1986

Aluminum-lithium-beryllium alloys have been prepared by melt spinning, using prealloyed arc-melted buttons. The alloy ribbon was comminuted and cold compacted to 30 to 50% density, vacuum hot pressed to 100% density, and extruded. The bar product was subsequently solution heat treated, quenched, and aged. The microstructure of the alloys consists of a relatively featureless matrix containing a homogeneous dispersion of fine beryllium particles, mostly 50 to 500 nm in size. The results of heat treatment show that the alloys respond to age hardening in a manner similar to that of binary Al-Li alloys. Preliminary results on the mechanical properties and their relationships with microstructural features are presented for the Al-Li-Be alloys, as well as their potential for weight savings. The authors estimate that these monolithic aluminum alloys may exhibit specific strength and elastic modulus values comparable to those of the best whisker or particulate metal-matrix composites, while showing concomitant high weight savings.

1.
Pickens
,
J. R.
, “
Aluminum Powder Metallurgy Technology for High Strength Applications
,”
Journal of Materials Science
 0022-2461, Vol.
16
,
1981
, pp. 1437-1457.
2.
Tietz
,
T. E.
and
Palmer
,
I. G.
, “
Advanced PM Aluminum Alloys
,”
Proceedings
,
1981 American Society for Metals Materials Science Seminar: Advances in Powder Technology
,
Louisville, KY
,
10
1981
, pp. 189-224.
3.
Ekvall
,
J. C.
,
Rhodes
,
J. E.
, and
Wald
,
G. C.
, “
Methodology for Evaluating Weight Savings from Basic Materials Properties
,”
Design of Fatigue and Fracture Resistant Structures
, ASTM STP 761,
American Society for Testing and Materials
,
Philadelphia
,
1982
, pp. 328-341.
4.
Lewis
,
R. E.
,
Palmer
,
I. G.
,
Ekvall
,
J. C.
,
Sakata
,
I. F.
, and
Quist
,
W. E.
, “
Aerospace Structural Applications of Rapidly Solidified Aluminum-Lithium Alloys
,”
Proceedings
,
Third Conference on Rapid Solidification Processing: Principles and Technology
,
Gaithersburg, MD
, 6–8 Dec. 1982, pp. 615-628.
5.
Aluminum
, Vol.
1
,
Properties, Physical Metallurgy and Phase Diagrams
,
Van Horn
K. R.
, Ed.,
American Society for Metals
,
Metals Park, OH
,
1968
.
6.
Palmer
,
I. G.
,
Lewis
,
R. E.
, and
Crooks
,
D. D.
, “
Low Density, High Modulus Aluminum-Lithium Alloys from Splat Particulate
,”
Proceedings
,
Second International Conference on Rapid Solidification Processing
,
Mehrabian
R.
,
Kear
B. H.
, and
Cohen
M.
, Eds.,
Claitors Publishing Division
,
Baton Rouge, LA
,
1980
, pp. 342-353.
7.
Palmer
,
I. G.
,
Lewis
,
R. E.
, and
Crooks
,
D. D.
, “
Development of Al-Li-X Alloys Using Rapidly Solidified Powders
,”
Proceedings
,
Conference on Aluminum Powder Metallurgy
,
American Institute of Mining, Metallurgical, and Petroleum Engineers
,
Dallas, TX
,
02
1982
, pp. 369-390.
8.
Starke
,
E. A.
, Jr.
,
Sanders
,
T. A.
, Jr.
, and
Palmer
,
I. G.
, “
New Approaches to Alloy Development in the Al-Li System
,”
Journal of Metals
 0148-6608, Vol.
33
, No.
8
,
1981
, pp. 24-33.
9.
Paris
,
H. G.
,
Billman
,
F. R.
,
Cebulak
,
W. S.
, and
Petit
,
J. I.
,
Proceedings
,
Second International Conference on Rapid Solidification Processing
,
Mehrabian
R.
,
Kear
B. H.
, and
Cohen
M.
, Eds.,
Claitors Publishing Division
,
Baton Rouge, LA
,
1980
, pp. 331-341.
10.
McCarthy
,
W. H.
,
Fenn
,
R. F.
, Jr.
, and
Crooks
,
D. D.
, U.S. Patent 3,644,889,
23
05
1972
.
11.
Elliot
,
R. P.
,
Constitution of Binary Alloys
, First Supplement,
McGraw-Hill
,
New York
,
1965
, p. 1965.
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