INVESTIGATION OF THE EFFECT OF COMBINED THERMOMECHANICAL PROCESSING ON THE BRASS MICROSTRUCTURE EVOLUTION AND THE MICROHARDNESS CHANGE
Naizabekov A. Lezhnev S. Volokitina I. Panin E. Tolkushkin A. Belsky S. Pishchov M.
2024Faculty of Metallurgy
Metalurgija
2024#63Issue 2283 - 286 pp.
The article investigates the effect of combined thermomechanical processing, including pre-heat treatment and radial-shear rolling on the brass microstructure evolution and the microhardness change. The microstructure analysis of heat-treated samples according to various modes showed that the most optimal heat treatment before radialshear rolling for L63 brass is annealing at a temperature of 500 °C. As a result of combined thermomechanical processing, a gradient structure was obtained, so in the resulting rods with a diameter of 16 mm in the surface layer, a structure with an average grain size of 9 μm was obtained. In rods with a diameter of 12 mm, a fine–grained, equalgrained structure of 3 μm was obtained in the surface layer.
brass , heat treatment , microhardness , microstructure , radial-shear rolling
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Rudny Industrial Institute, Rudny, Kazakhstan
Karaganda Industrial University, Temirtau, Kazakhstan
Belarusian State Technological University, Minsk, Belarus
Rudny Industrial Institute
Karaganda Industrial University
Belarusian State Technological University
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