Mechanical and Corrosion Properties of Low-Carbon Steel Processed by Cryorolling: Effect of Different Initial Microstructures

• Published in: Arabian journal for science and engineering (2011) Vol. 46; no. 8; pp. 7815 - 7825
• Main Authors: Zakaria, S. A., Lew, M. P., Anasyida, A. S., Idris, M. N., Zuhailawati, H., Ismail, A.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.08.2021; Springer Nature B.V
• Subjects: Aspect ratio; Corrosion; Corrosion effects; Corrosion resistance; Corrosion resistant steels; Crystallites; Electrochemical impedance spectroscopy; Elongated structure; Engineering; Ferrite; Heat treating; Humanities and Social Sciences; Immersion tests (corrosion); Liquid nitrogen; Low carbon steel; Low carbon steels; Martensite; Microstructure; multidisciplinary; Optical microscopy; Pearlite; Research Article-Mechanical Engineering; Science; Tensile tests; Ultimate tensile strength; Mechanical properties; Ferrite; Corrosion; Ultrafine grain; Martensite; Cryorolling
• ISSN: 2193-567X; 1319-8025; 2191-4281
• DOI: 10.1007/s13369-021-05507-9

In this study, low-carbon steel was fabricated by 70% rolling with ferrite–pearlite and ferrite–martensite as starting microstructures at liquid nitrogen temperature. The samples were characterized for microstructure, crystallite size, strength, and corrosion behaviour by using optical microscopy, X-ray diffraction, tensile test, potentiodynamic polarization, immersion test and electrochemical impedance spectroscopy. The ferrite–martensite starting microstructure has the highest grain aspect ratio (12.86), highest ultimate tensile strength (927.36 MPa), highest yield strength (920.05 MPa), smallest crystallite size (4.80 nm) and elongation (8.08%) than cryorolled sample with ferrite–pearlite structure. Moreover, the sample with initial structure of ferrite–martensite has the highest corrosion resistance.