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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H. W. Antes, S. Lipson, and H. Rosenthal:Trans. TMS-AIME, 1967, vol. 239, pp. 1634–42.
H. W. Antes and H. Markus:Met. Eng. Quart., 1970, vol. 10, No. 4, pp. 9–11.
J. H. Mulherin and H. Rosenthal:Met. Trans., 1971, vol. 2, pp. 427–32.
S. N. Singh and M. C. Flemings:Trans. TMS-AIME, 1969, vol. 245, pp. 1811- 19.
M. Conserva, E. DiRusso, and F. Gatto:Allum. Nuova Met., 1968, No. 9, pp. 441-45.
E. DiRusso, M. Conserva, F. Gatto, and H. Markus:Met. Trans., 1973, vol. 4, pp. 1133–44.
E. DiRusso:Improvements of the Properties of High Strength Aluminum Alloys by Means of Complex Thermomechanical Treatments, Istituto Sperimentale dei Metalli Leggeri (1SML), Novara, Italy, Report No. 71/21311, April, 30, 1971.
E. DiRusso, M. Conserva, and M. Burratti:A New Thermo-Mechanical Procedure for Improving the Ductility and Toughness of Al-Zn-Mg-Cu Alloys in the Transverse Directions, Istituto Sperimentale dei Metalli Leggeri (ISML), Novara, Italy, Report No. 72/22715, October 26, 1972.
E. DiRusso, M. Conserva, M. Burratti, and F. Gatto:Mat. Sci. Eng. (in press).
E. DiRusso, M. Conserva, and M. Burratti:Preliminary Results of Mechanical and Stress-Corrosion Tests on Plates of 7075 Alloy Produced by a New Processing Technique, AGARD Conference Proceedings No. 98, Paper 30, January 1972.
W. A. Dean and W. Á. Anderson:Effects of Grain Size in Aluminum Alloys,Ultrafine-Grain Metals, J. J. Burke and V. Weiss, eds., pp. 373-75, Proc. of 16th Sagamore Army Materials Research Conference, August 19–22, 1969.
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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