Conclusion
Macrograin boundaries viewed visually in commercial aluminum correspond to the boundaries of crystallites observed in the microstructure. At the same time, some of these crystals may appear with visual observation as individual coarse macrograins.
This feature is retained in aluminum alloys, but more varied forms develop. A macrograin of the smallest size probably corresponds to an individual microcrystal in aluminum alloys of the solid solution type or a dendrite (dendrite branch) in silumins.
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Literature cited
A. A. Popov, Phase Transformations in Alloys [in Russian], Metallurgiya, Moscow (1963).
M. V. Mal'tsev, Modification of the Structure of Metals and Alloys [in Russian], Moscow (1964).
B. I. Bondarev, V. I. Napalkov, and V. I. Tararyshkin, Modification of Wrought Aluminum Alloys [in Russian], Metallurgiya, Moscow (1979).
M. Bekkert and H. Kremli, Handbook for Metallographic Etching [Russian translation], Metallurgiya, Moscow (1979).
B. A. Movchan, Crystallite Boundaries in Cast Metals and Alloys [in Russian], Tekhnika, Kiev (1970).
G. P. Kulinichev and V. I. Nikitin, “Features of the structure of cast aluminum alloys,” in: Regularities of Structure Formation for Eutectic Type Alloys: Proc. 3rd All-Union Sci. Conf., Part 1, Dnepropetrovsk (1986).
Yu. M. Taran and V. I. Mazur, Structure of Eutectic Alloys [in Russian], Metallurgiya, Moscow (1978).
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Deceased.
Kuibyshev Polytechnic Institute. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 1, pp. 62–64, January, 1989.
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Kulinichev, G.P., Nikitin, V.I. Features of the macrostructure of aluminum alloys. Met Sci Heat Treat 31, 79–81 (1989). https://doi.org/10.1007/BF00735338
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DOI: https://doi.org/10.1007/BF00735338