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The effect of ingot processing treatments on the grain size and properties of Al alloy 7075

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Abstract

An investigation was carried out to determine the effect of various ingot thermal mechanical processing treatments on the grain size and mechanical properties of high purity homogeneous 7075 aluminum alloy sheet and plate. The results indicate that the recrystallization of 7075 alloy into a fine grained structure can be controlled by the distribution of the Cr in the microstructure, as well as by the distribution of the major alloying elements, Zn, Mg and Cu. A new ingot processing technique, FA-ITMT, was developed for producing fine grained 7075 sheet and plate. Data are presented which show that fine grained 7075 sheet and plate have equivalent strength and significantly better ductility than conventionally processed material.

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Authors and Affiliations

  1. Materials Engineering Division, Pitman Dunn Laboratory, Frankford Arsenal, 19137, Philadelphia, Pa.

    J. Waldman (Metallurgist), H. Sulinski (Metallurgist) & H. Markus (Chief)

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  1. J. Waldman
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  2. H. Sulinski
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  3. H. Markus
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Waldman, J., Sulinski, H. & Markus, H. The effect of ingot processing treatments on the grain size and properties of Al alloy 7075. Metall Trans 5, 573–584 (1974). https://doi.org/10.1007/BF02644652

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  • DOI: https://doi.org/10.1007/BF02644652

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