Realization of the innovative potential of radial-shear rolling for forming the structure and mechanical properties of AISI-321 austenitic stainless steel
ABSTRACT 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 °C were investigated. The tensile strength (1076 MPa) and Vickers microhardness (322 HV) after 7 passes increased by 2.2 times and 2 times...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2021 |
| País: | Brasil |
| Institución: | Matéria (Rio de Janeiro. Online) |
| Repositorio: | Matéria (Rio de Janeiro. Online) |
| Idioma: | inglés |
| OAI Identifier: | oai:scielo:S1517-70762021000300319 |
| Acceso en línea: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762021000300319 |
| Access Level: | acceso abierto |
| Palabra clave: | severe plastic deformation ultra-fine grained structure radial-shear rolling microstructure mechanical properties |
| Sumario: | ABSTRACT 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 °C 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. |
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