Vladimir State University named after Alexander and Nikolay Stoletovs, Vladimir, Russia

A. V. Aborkin, Associate Professor, Department of Technology of Mechanical Engineering, e-mail: aborkin@vlsu.ru
E. S. Prusov, Associate Professor, Department of Functional and Constructional Materials Technology, e-mail: eprusov@mail.ru

D. V. Bokaryov, Post-Graduate Student, Department of Technology of Mechanical Engineering, e-mail: bokarev.1998@list.ru

Vladimir State University named after Alexander and Nikolay Stoletovs, Vladimir, Russia¹ ; Wuhan Textile University, Wuhan, China² ; National University of Science and Technology “MISiS”, Moscow, Russia³
V. B. Deev*, Professor, Chief Researcher¹, School of Mechanical Engineering and Automation², Professor of Department of Metal Forming³, e-mail: deev.vb@mail.ru

*Correspondence author.

In order to increase the efficiency of material extraction during recycling of non-compact waste, solid-phase processing methods are currently being developed to reduce energy consumption in the manufacturing of secondary products. This study provides a comparative evaluation of the influence of high-energy ball milling of chip waste from turning ingots of AlSi12 + 10 vol.% B₄C aluminum matrix composite on changes in the structure and mechanical properties of consolidated billets compared to compacted unprepared chips and as-cast state. It was found that the samples consolidated from powder are characterized by increased strength properties in comparison with the cast composite and chips pressed composite. Specifically, the yield strength of the powder consolidated specimens increased by ~1.5 and ~2.3 times compared to the cast composite and chips pressed composite, respectively. The hardness of the cast composite was 39.35 ± 3.2 HRB, while the hardness of the samples consolidated from chips and powder was 42.75 ± 1.2 and 71.4 ± 1.5 HRB, correspondingly. The observed mechanical behavior is associated with a reduction in the sizes of the structural constituents of the matrix alloy, fragmentation of the reinforcing particles, a decrease in the porosity fraction, as well as an increase in the uniformity of particles distribution in the volume of the powder-pressed specimen. The results demonstrate the potential of solid-phase methods for processing non-compact waste in the manufacturing of products from metal matrix composites.

This research was funded by the Russian Science Foundation (Project № 21-79-10432, https://rscf.ru/project/21-79-10432/). The study was carried out using the equipment of the interregional multispecialty and interdisciplinary center for the collective usage of promising and competitive technologies in the areas of development and application in industry/mechanical engineering of domestic achievements in the field of nanotechnology (Agreement No. 075-15-2021-692 of August 5, 2021).

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