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Materials 2017, 10(3), 294; doi:10.3390/ma10030294

Effects of Nitrogen and Tensile Direction on Stress Corrosion Cracking Susceptibility of Ni-Free FeCrMnC-Based Duplex Stainless Steels

1
Ferrous Alloy Department, Korea Institute of Materials Science, Changwon 51508, Gyeongnam, Korea
2
Department of Materials Engineering and Convergence Technology, Research Center for Aircraft Part Technology, Gyeongsang National University, Chinju 52828, Gyeongnam, Korea
*
Authors to whom correspondence should be addressed.
Academic Editor: Alex A. Volinsky
Received: 30 January 2017 / Revised: 6 March 2017 / Accepted: 13 March 2017 / Published: 15 March 2017
(This article belongs to the Special Issue Stress Corrosion Cracking in Materials)
View Full-Text   |   Download PDF [12155 KB, uploaded 15 March 2017]   |  

Abstract

Stress corrosion cracking (SCC) behavior of Ni-free duplex stainless steels containing N and C (Febalance-19Cr-8Mn-0.25C-(0.03, 0.21)N, in wt %) was investigated by using a slow strain rate test (SSRT) in air and aqueous NaCl solution with different tensile directions, including parallel (longitudinal) and perpendicular (transverse) to the rolling direction. It was found that alloying N was effective in increasing the resistance to SCC, while it was higher along the longitudinal direction than the transverse direction. The SCC susceptibility of the two alloys was assessed based on the electrochemical resistance to pitting corrosion, the corrosion morphology, and the fractographic analysis. View Full-Text
Keywords: duplex stainless steel; nitrogen; stress corrosion cracking; pitting corrosion duplex stainless steel; nitrogen; stress corrosion cracking; pitting corrosion
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ha, H.-Y.; Lee, C.-H.; Lee, T.-H.; Kim, S. Effects of Nitrogen and Tensile Direction on Stress Corrosion Cracking Susceptibility of Ni-Free FeCrMnC-Based Duplex Stainless Steels. Materials 2017, 10, 294.

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