Journal Published Online: 09 March 2018
Volume 7, Issue 1

Transitions from Pits to Cracks during Stress Corrosion Cracking in a Low-Carbon Steel

CODEN: MPCACD

Abstract

This article presents the results of a combined experimental and analytical/computational study of the transition from corrosion pits to stress corrosion cracks during the exposure of low-carbon steel to environments with different pH levels (pH of 3, 5, 8, and 11). The transition from pits to cracks is elucidated via confocal microscopy and scanning electron microscopy. The stress concentrations associated with possible pit sizes and configurations are also modeled using finite element analyses and fracture mechanics models. Finally, the implications of the results are discussed for the modeling of the transition from pitting to stress corrosion cracking in low-carbon steels.

Author Information

Kolawole, S. K.
Department of Materials Science and Engineering, African University of Science and Technology (AUST), Garki, Abuja, Nigeria Department of Engineering Infrastructure, National Agency for Science and Engineering Infrastructure (NASENI), Garki, Abuja, Nigeria
Obayemi, J. D.
Department of Mechanical Engineering, Worcester Polytechnic Institute, Worcester, MA, USA Department of Biomedical Engineering, Worcester Polytechnic Institute, Worcester, MA, USA
Kolawole, F. O.
Department of Materials and Metallurgical Engineering, Federal University Oye, Oye-Ekiti, Ekiti State, Nigeria
Soboyejo, A. B. O.
Department of Food, Agricultural and Biological Engineering, Ohio State University, Columbus, OH, USA
Soboyejo, W. O.
Department of Materials Science and Engineering, African University of Science and Technology (AUST), Garki, Abuja, Nigeria Department of Biomedical Engineering, Worcester Polytechnic Institute, Worcester, MA, USA Department of Mechanical Engineering, Worcester Polytechnic Institute, Worcester, MA, USA
Pages: 14
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Stock #: MPC20170129
ISSN: 2379-1365
DOI: 10.1520/MPC20170129