Abstract
The copper/aluminum alloy and copper/steel/aluminum alloy composites fabricated by rotary forging at room temperature are studied. An analysis of the calculated forging reduction ratios of the components indicates a complex process of deformation of composite workpieces during forging from an initial diameter of 20 mm to a final diameter of 2.5 mm. Rotary forging leads to significant hardening of both the copper shell and the aluminum rod and to the appearance of a nonuniform microhardness distribution in the cross section of the samples, which levels off with increasing reduction. The mechanical properties of both composites are comparable after forging to a diameter of 5 mm: the yield strength and the ultimate tensile strength are 355–370 and 390–395 MPa, respectively, at a relative elongation of 2–3%. A consistent decrease in the sample diameter to 2.9 mm does not cause a noticeable change in the strength properties of the composites and decreases the ductility of the copper/steel/aluminum alloy composite material.
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ACKNOWLEDGMENTS
We thank engineer A.A. Tokar’ for his assistance on the sample preparation.
Funding
This work was supported by the Russian Foundation for Basic Research and the Government of Moscow within the framework of scientific project no. 21-32-70015.
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Translated by K. Shakhlevich
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Rogachev, S.O., Sundeev, R.V., Andreev, V.A. et al. Mechanical Behavior of a Copper–Aluminum Clad Composite Material during Rotary Forging. Russ. Metall. 2022, 332–338 (2022). https://doi.org/10.1134/S0036029522040231
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DOI: https://doi.org/10.1134/S0036029522040231