Skip to Main Content
Skip Nav Destination
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 thermal response and aging behavior of three 2XXX-series powder metallurgy aluminum alloys have been investigated, using Rockwell B hardness measurements, optical and electron microscopy, and energy-dispersive chemical analysis, in order to correlate microstructure with measured mechanical properties. Results of the thermal response study indicated that an increased solution heat treatment temperature was effective in resolutionizing large primary constituents in the alloy bearing more copper but had no apparent effect on the microconstituents of the other two. Aging studies conducted at room temperature and at 120, 150, and 180°C for times ranging up to 60 days indicated that classic aging response curves, as determined by hardness measurements, occurred at lower aging temperatures than were previously studied for these alloys, as well as at lower aging temperatures than are commonly used for ingot metallurgy alloys of similar compositions. Microstructural examination and fracture surface analysis of peak-aged tension specimens indicated that the highest tensile strengths are associated with extremely fine and homogeneous distributions of θ′ or S′ phases combined with low levels of both large constituent particles and dispersoids. Examination of the results suggest that refined solution heat treatments and lower aging temperatures may be necessary to achieve optimum mechanical properties for these 2XXX series alloys.

1.
Chellman
,
D. J.
and
Slaughter
,
H. C.
, “
Technology Study for Advanced Supersonic Cruise Vehicle—Advanced Aluminum Alloy and Metal Matrix Composite Development
,” NASA Report CR-165965,
National Aeronautics and Space Administration
, Washington, DC,
11
1982
.
2.
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
.
3.
Wald
,
G. G.
, “
Supersonic Cruise Vehicle Technology Assessment Study of an Over/Under Engine Concept—Advanced Aluminum Alloy Evaluation
,” NASA Report CR-165676,
National Aeronautics and Space Administration
, Washington, DC,
05
1981
.
4.
Voss
,
D. P.
, “
Structure and Mechanical Properties of Powder Metallurgy 2024 and 7075 Aluminum Alloys
,” AFOSR Grant 77-3440,
Institute for Materials Research DFVLR
,
Cologne, Germany
,
10
1979
.
5.
Lewis
,
R. E.
,
Webster
,
D.
, and
Polmear
,
I. G.
, “
A Feasibility Study for Development of Structural Aluminum Alloys from Rapidly Solidified Powders for Aerospace Structural Applications
,” Technical Report AFML-TR-78-102,
Air Force Materials Laboratory, Wright-Patterson Air Force Base
, OH,
07
1978
.
6.
Lewis
,
R. E.
, “
Development of Advanced Aluminum Alloys from Rapidly Solidified Powders for Aerospace Structural Applications
,” Interim Technical Report for Period March 1979–September 1979 LMSC-D678772,
Air Force Materials Laboratory, Wright-Patterson Air Force Base
, OH,
09
1979
.
7.
Roberts
,
S. G.
, “
Research Study for Development of Aluminum Base Alloys by Powder Metallurgy Techniques
,” Summary Project Report No. MS PR 61-69,
U.S. Department of the Army
, Washington, DC,
11
1961
.
8.
Polmear
,
I. J.
, “
Light Alloys—Metallurgy of the Light Metals
,”
Edward Arnold
,
London
,
1981
, pp. 19-21.
9.
Kelly
,
A.
and
Nicholson
,
R. B.
,
Progress in Materials Science
, Vol.
10
, No.
3
,
1963
, pp. 190-200.
10.
Brooks
,
C. R.
,
Heat Treatment, Structure, and Properties of Nonferrous Alloys
,
American Society for Metals
,
Metals Park, OH
,
1982
, pp. 125-126.
11.
Brock
,
D.
,
Elementary Engineering Fracture Mechanics
,
Martinus Nijhoff
,
Boston
,
1982
, p. 41.
12.
Bhandarkar
,
M. D.
and
Lisagor
,
W. B.
, “
Metallurgical Characterization of the Fracture of Several High-Strength Aluminum Alloys
,”
NASA Technical Paper
 1086,
National Aeronautics and Space Administration
,
Washington, DC
,
12
1977
.
This content is only available via PDF.
You do not currently have access to this chapter.
Close Modal

or Create an Account

Close Modal
Close Modal