Open AccessRecycling of stainless steel bar scrap by radial-shear rolling to obtain an ultrafine-grained gradient structure
Author(s) -
Sergey Lezhnev,
Abdrakhman Naizabekov,
Irina Volokitina,
Evgeniy Panin,
Д. В. Куис
Publication year - 2021
Publication title -
litʹë i metallurgiâ
Language(s) - English
Resource type - Journals
eISSN - 2414-0406
pISSN - 1683-6065
DOI - 10.21122/1683-6065-2021-2-61-67
Subject(s) - equiaxed crystals , materials science , microstructure , metallurgy , scrap , shear (geology) , indentation hardness , austenite , austenitic stainless steel , bar (unit) , grain size , annealing (glass) , composite material , deformation (meteorology) , corrosion , geology , oceanography
Thiswork is devoted to the study of the possibility of recycling bar scrap of stainless metals using radial-shear rolling. In the course of studies on the deformation of bar scrap in the form of pins made of 12X18N9T stainless austenitic steel on a radial-shear rolling mill, the resulting bar was obtained microstructure of two different types: on the periphery an equiaxed ultrafine-grained structure with a grain size of 0.4–0.6 microns was formed; in the axial zone anoriented, banded texture was obtained. This discrepancy in the structure of the peripheral and axial zones, together with the results of cross-section microhardness measurements of samples made of 12X18N9T austenitic stainless steel with a total degree of deformation of 44.4 %, indicates the gradient nature of the resulting microstructure.