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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

The effects of thermomechanical treatment (TMT) on the mechanical properties and metallurgical structure of 2124 powder metallurgy (PM) aluminum alloys prepared from rapidly solidified powders were investigated. The alloys were prepared by using a standard canning/vacuum degassing/hot consolidation/extrusion sequence. Two compositions, with manganese contents of 0.5 and 1.5%, were investigated to examine the effects of low and high dispersoid levels.

The results indicate that significant improvements in strength can be accomplished through TMT for this PM alloy system with little loss in toughness. The increase in strength observed is attributed to the presence of much finer, more homogeneous S′ precipitation than that observed without TMT. Rolling deformation at room temperature resulted in some tendency for nonuniform (planar) deformation and resulted in slightly lower notch strength values. The lower notch strengths observed in the higher manganese composition were attributed to the coarser, more dense dispersoids observed in this material.

1.
DiRusso
,
E.
,
Conserva
,
M.
, and
Gatto
,
F.
,
Aluminio and Nuova Metallurgia
, Vol.
37
, No.
9
,
1968
, pp. 441-445.
2.
Paton
,
N. E.
and
Sommer
,
A. W.
,
Proceedings
,
Third International Conference on the Strength of Metals and Alloys
,
Institute of Metals
,
Cambridge, England
,
1973
, pp. 101-108.
3.
Lipsitt
,
H. A.
and
Sargent
,
C. M.
,
Proceedings
,
Second International Conference on the Strength of Metals and Alloys
,
American Society for Metals
,
Metals Park, OH
,
1970
, pp. 937-940.
4.
Wilcox
,
B. A.
and
Clauer
,
A. H.
,
Proceedings
,
Symposium on Thermomechanical Processing
,
St. Louis, MO
,
The Metallurgical Society of the American Institute of Mining, Metallurgical, and Petroleum Engineers
,
1978
, pp. 127-145.
5.
Thompson
,
D. S.
,
Levy
,
S. A.
, and
Spangler
,
G. E.
,
Aluminum
, Vol.
50
, No.
1
, Part I, pp. 647-649;
Thompson
,
D. S.
,
Levy
,
S. A.
, and
Spangler
,
G. E.
,
Aluminum
, Vol.
50
, No.
1
, Part II, pp. 719-723.
6.
Thomas
,
G.
,
Journal of the Institute of Metals
 0020-2975, Vol.
89
,
1961
, pp. 287-288.
7.
Petit
,
J. I.
, “
Structure and Properties of Three Powder Metallurgically Processed Al-Cu-Mg Alloys
,” Alcoa Report No. 56-80-AP312,
Alcoa Laboratories, Alcoa Center
, PA,
10
1980
.
8.
Hahn
,
G. T.
and
Rosenfield
,
A. R.
,
Metallurgical Transactions
 0026-086X, Vol.
6A
,
04
1975
, pp. 653-670.
9.
Broek
,
D.
, “
A Study on Ductile Fracture
,” NRL TR 71 021 V,
National Aerospace Laboratory
,
The Netherlands
,
1971
.
10.
Wald
,
G. G.
, “
Supersonic Cruise Vehicle Technology Assessment Study of an Over/Under Engine Concept—Advanced Aluminum Alloy Evaluation
,” NASA Contractor Report 165676,
National Aeronautics and Space Administration
, Washington, DC,
05
1981
.
11.
Urie
,
V. M.
and
Wain
,
H. L.
,
Journal of the Institute of Metals
 0020-2975, Vol.
81
,
1952
, pp. 153-159.
12.
Starke
,
E. A.
, Jr.
, and
Lin
,
F. S.
,
Metallurgical Transactions
 0026-086X, Vol.
13A
,
12
1982
, pp. 2259-2269.
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