INVESTIGATION OF THE CHANGE IN THE THICKNESS OF ALUMINUM AND MAGNESIUM STRIPS DURING JOINT PLASTIC DEFORMATION BY ROLLING
DOI:
https://doi.org/10.34185/1991-7848.itmm.2023.01.007Keywords:
bimetallic strip, rolling, aluminum, magnesium, layer, thickness, deformationAbstract
Magnesium alloys have good mechanical properties for applications in the automotive and aerospace industries where weight reduction is important. Unfortunately, magnesium alloys are highly susceptible to corrosion and this fact limits their use. One of the ways to prevent corrosion is to protect the magnesium layers with strip from aluminum alloy. In this study, three-layer strips made of an aluminum and magnesium alloy were obtained by the method of joint hot plastic deformation on a rolling mill. Using an optical microscope, the change in the thickness of aluminum and magnesium layers after plastic deformation was investigated. The analysis of the deformation of layers in the middle of three-layer strips showed, that at a given degree of deformation of 50%, the magnesium alloy layers received a smaller relative deformation than the aluminum alloy layers. This dependence is established both for packages with a thickness of 8 mm and 12.8 mm.
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