Recycling of stainless steel bar scrap by radial-shear rolling to obtain a gradient ultrafine-grained structure
Lezhnev S. Naizabekov A. Panin E. Volokitina I. Kuis D.
July 2021Faculty of Metallurgy
Metalurgija
2021#60Issue 3-4339 - 342 pp.
The paper presents the results of the conducted experiments confirmed not only the possibility of processing bar scrap from stainless metals to produce a marketable product, but also confirmed the possibility of obtaining high-quality bars with a gradient fine-grained structure and an increased level of mechanical properties. In the course of the research conducted on deformed bar scrap in the form of pins from 12X18N9T austenitic stainless steel at the radial-shear rolling mill the microstructure of two different types was obtained: on the periphery-equiaxed ultra-fine-grained structure with a grain size of 0,4 – 0,6 µm; in the axial zone-oriented striped texture. This discrepancy in the structure of the peripheral and axial zones, together with the results of microhardness measuring across the cross section of samples with a total degree of deformation of 44,4 %, indicates the gradient nature of the formed microstructure.
Mechanical properties , Microstructure , Radial-shear rolling , Recycling , Stainless steel
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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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