Mechanically Induced Martensitic Transformation of Hot Rolled and Annealed 304L Austenitic Stainless Steel at Room and Cryogenic Temperatures

• Published in: Materials research (São Carlos, São Paulo, Brazil) Vol. 22; no. suppl 1
• Main Authors: Alves, Juciane Maria, Brandão, Luiz Paulo, Paula, Andersan dos Santos
• Format: Journal Article
• Language: English
• Published: ABM, ABC, ABPol 01-01-2019; Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
• Subjects: 304L austenitic stainless steel; cold rolling; ENGINEERING, CHEMICAL; martensitic transformation; MATERIALS SCIENCE, MULTIDISCIPLINARY; METALLURGY & METALLURGICAL ENGINEERING; tensile test; thermomechanical processing; martensitic transformation; tensile test; 304L austenitic stainless steel; thermomechanical processing; cold rolling
• ISSN: 1516-1439; 1980-5373; 1980-5373
• DOI: 10.1590/1980-5373-mr-2019-0150

The 304L austenitic stainless steel is susceptible to mechanically induced martensitic transformation from slightly above room temperature down to cryogenic temperatures. In this work, austenitic 304L steel produced by two different thermomechanical processes, hot rolling (HR) and cold rolling and annealing (CR/A), were subjected to martensitic transformation by rolling and by tensile tests at 298 K and 155 K and the volume fraction of martensite was determined by X-ray diffraction and ferritescope measurements. The results showed that the martensitic transformation was complete for CR/A samples rolled at 155 K and that the volume fraction of martensite was larger in CR/A samples than in HR samples in all cases.