Cold rolling of Al-Mg system aluminum alloy
DOI:
https://doi.org/10.37142/2076-2151/2022-1(51)147Keywords:
aluminium alloy, finite element method, modeling, rolling, stress intensity, strain intensity, average stresses, average strains, edge zones.Abstract
Koreva V. O. Cold rolling of Al-Mg system aluminum alloy
Aluminum weldable and thermally non-strengthening alloys of the Al-Mg system are widely used as light structural materials in various industries. Improving the specific strength characteristics of such alloys due to cold plastic deformation is one of the urgent scientific and technical problems. However, an important issue in the development of technological modes of plastic deformation of aluminum alloys is also the prediction of destruction, which is accompanied by the development and increase in the number of micropores and microcracks. In the work, the study of the deformation treatment of the aluminum alloy of the Al-Mg system by cold rolling was carried out. Numerical modeling of the process of cold rolling of aluminum alloy 5056 of the Al-Mg system was carried out by the finite element method using the DEFORM-3D software package for engineering analysis of technological operations of pressure metal processing. As a result of the numerical experiment, a graph of the moments occurring on the rolls was obtained. Distributions of stresses (intensity of stresses and average stresses in the center of deformation) at the maximum moment on the rolls and deformations (intensity of deformations and other components) at the end of deformation were also obtained. An analysis of the damage accumulation established by simulation was carried out. In this paper, during numerical modeling, metal damage was calculated according to the Cockroft & Latham failure criterion. The results of experimental studies, including microstructures, after the rolling process are also given. It was established that after rolling we get a grain with a length of 100...200 microns and a width of 10...20 microns.
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