Effect of applied stress on corrosion and mechanical properties of mild steel

Li, L, Li, C and Mahmoodian, M 2018, 'Effect of applied stress on corrosion and mechanical properties of mild steel', Journal of Materials in Civil Engineering, vol. 31, no. 2, pp. 1-30.


Document type: Journal Article
Collection: Journal Articles

Title Effect of applied stress on corrosion and mechanical properties of mild steel
Author(s) Li, L
Li, C
Mahmoodian, M
Year 2018
Journal name Journal of Materials in Civil Engineering
Volume number 31
Issue number 2
Start page 1
End page 30
Total pages 30
Publisher American Society of Civil Engineers
Abstract There is little knowledge on the effect of stress on corrosion rate of mild steel and as to how the combined effect of stress and corrosion affects the mechanical properties of mild steel. This paper presents a comprehensive experiment to provide evidence of the effect of stress on corrosion progress and mechanical properties of corroded steel. Test specimens, both stressed and non-stressed, are immersed in hydrochloride acid with acidity ranging from 0.00001 Molar to 3 Molar. Cause and effect relations among stress, corrosion and mechanical properties of corroded steel are investigated and analysed quantitatively at both macrostructural and microstructural levels. It is found in the paper that the stress can accelerate the corrosion progress and contribute to the intergranular corrosion and intergranular stress corrosion cracking of steel. Consequently, stress can expedite the reduction of mechanical properties of corroded steel, especially the ultimate strength and failure strain. The significance of this paper is that it not only proves the effect of stress on corrosion and mechanical properties of corroded steel but also provides a more accurate understanding of cause-effect relationships among stress, corrosion and mechanical properties of corroded steel.
Subject Civil Engineering not elsewhere classified
Keyword(s) Stress
Steel
Corrosion
Microstructure
Mechanical property
DOI - identifier 10.1061/(ASCE)MT.1943-5533.0002594
Copyright notice © 2018 American Society of Civil Engineers
ISSN 0899-1561
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