Aging of an aluminum alloy resulting from variations in the cooling rate
The effect that the rate of cooling after solubilization exerts on the aging behavior of an aluminum heat treatable alloy was studied. Bars of the alloy were heated in a box furnace for solubilization, and after this was achieved they were cooled to room temperature by placing one end in a shallow tank of water. Thermal evolution along the bar was registered with the aid of thermocouples connected to a PC-based data logging system. Small samples were cut from the bars and aged for different times and temperatures. Results from microhardness tests indicate that peak hardness, at a given aging temperature, augments with the increase of the cooling rate until a certain value is achieved, above which the hardness remains constant. This feature was found to be due to precipitation taking place at the lower cooling rates.
- Research Organization:
- Univ. Autonoma de Nuevo Leon (MX)
- OSTI ID:
- 20000460
- Journal Information:
- Journal of Materials Engineering and Performance, Vol. 8, Issue 5; Other Information: PBD: Oct 1999; ISSN 1059-9495
- Country of Publication:
- United States
- Language:
- English
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