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Aging of an aluminum alloy resulting from variations in the cooling rate

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Abstract

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.

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Authors and Affiliations

  1. Facultad de Ingeniería Mecánica y Eléctrica, Universidad Autónoma de Nuevo León, A.P. 149-F, 66451, Cd. Universitaria, N.L., México

    J. L. Cavazos & R. Colás

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  1. J. L. Cavazos
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  2. R. Colás
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Cavazos, J.L., Colás, R. Aging of an aluminum alloy resulting from variations in the cooling rate. J. of Materi Eng and Perform 8, 509–512 (1999). https://doi.org/10.1007/s11665-999-0001-y

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  • DOI: https://doi.org/10.1007/s11665-999-0001-y

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