Metallurgy, Vol. 63 No. 2, 2024.
Preliminary communication
Investigation of the effect of combined thermomechanical processing on the brass microstructure evolution and the microhardness change
A. Naizabekov
; Rudny Industrial Institute, Rudny, Kazakhstan
S. Lezhnev
; Rudny Industrial Institute, Rudny, Kazakhstan
I. Volokitina
; Karaganda Industrial University, Temirtau, Kazakhstan
E. Panin
; Karaganda Industrial University, Temirtau, Kazakhstan
*
A. Tolkushkin
; Rudny Industrial Institute, Rudny, Kazakhstan
S. Belsky
; Belarusian State Technological University, Minsk, Belarus
M. Pishchov
; Belarusian State Technological University, Minsk, Belarus
* Corresponding author.
Abstract
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.
Keywords
brass; radial-shear rolling; heat treatment; microstructure; microhardness
Hrčak ID:
312347
URI
Publication date:
1.4.2024.
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