SYMPOSIA PAPER Published: 01 January 1970
STP26844S

Thermomechanical Processing and Fatigue of Aluminum Alloys

Source

A review is made of the available information on thermomechanical processing of aluminum alloys, especially with respect to their fatigue behavior. An attempt is made to evaluate from the scarce and sometimes contradictory experimental evidence the possibility of improving the fatigue resistance of high-strength aluminum alloys by these treatments. To do so, it is also necessary to review the important microstructural features and deformation characteristics of these alloys, which seem to control the various stages of fatigue, and which may be influenced by the thermomechanical treatments. The discussion is limited to thermomechanical treatments subsequent to solution annealing. It is concluded that suitable processing offers the advantage of improving both strength and ductility in Al-Cu and Al-Zn-Mg-Cu alloys. If the effects of inclusions can be minimized, significant benefits are possible in fatigue, at least in Stage I crack resistance, by thermomechanical processing.

Author Information

Ostermann, FG
Air Force Materials Laboratory, Wright-Patterson Air Force Base, Ohio
Reimann, WH
Air Force Materials Laboratory, Wright-Patterson Air Force Base, Ohio
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Details
Developed by Committee: E08
Pages: 169–186
DOI: 10.1520/STP26844S
ISBN-EB: 978-0-8031-4587-0
ISBN-13: 978-0-8031-0030-5