Realization of the innovative potential of radial-shear rolling for forming the structure and mechanical properties of aisi-321 austenitic stainless steel
Naizabekov A. Lezhnev S. Panin E. Volokitina I. Kasperovich A.
2021Universidade Federal do Rio de Janeiro
Revista Materia
2021#26Issue 3
In this paper the grain structure and mechanical properties of AISI-321 austenitic stainless steel subjected to 7 passes of radial-shear rolling at 1000 °С were investigated. The tensile strength (1076 MPa) and Vickers microhardness (322 HV) after 7 passes increased by 2.2 times and 2 times, respectively, relative to the initial annealed state (480 MPa, 160 HV). Ultra-fine grained structure (200-700 nm) formed in the bar section area from its surface to a depth of 0.25 of the radius. The transition zone is located in the area between 0.5 R and 0.25 R of the bar section. Anything deeper is a rolling texture. The 7-pass radial-shear rolling process is an effective way to form UFG structure and improved mechanical properties in AISI-321 austenitic stainless steel.
Mechanical properties , Microstructure , Radial-shear rolling , Severe plastic deformation , Ultra-fine grained structure
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Department of Metallurgy and Mining, Rudny Industrial Institute, 50 let Oktyabrya 38, Kostanay region, Rudny, 111500, Kazakhstan
Metal Forming department, Karaganda Industrial University, Republic avenue 30, Karaganda region, Temirtau, 101400, Kazakhstan
Belarusian State Technological University, Sverdlov str. 13a, Minsk, 220006, Belarus
Department of Metallurgy and Mining
Metal Forming department
Belarusian State Technological University
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