Open Access System for Information Sharing

Login Library

 

Article
Cited 0 time in webofscience Cited 0 time in scopus
Metadata Downloads

Effect of Cr and N on the Stress Corrosion Cracking Behavior of Fe-18Mn Steel

Title
Effect of Cr and N on the Stress Corrosion Cracking Behavior of Fe-18Mn Steel
Authors
Choi, HeesooKim, SuminSung, HyokyungKim, Sung-JoonKim, Sangshik
Date Issued
Oct-2019
Publisher
KOREAN INST METALS MATERIALS
Abstract
High-Mn steels developed for offshore industries require good resistance to stress corrosion cracking (SCC) in seawater. Elements like Cr and N are often added to improve the resistance to SCC. In this study, the SCC behavior of Fe18Mn3Cr0.1N and Fe19Mn19Cr0.6N steels in artificial seawater was examined. Slow strain rate tests were conducted at a nominal strain rate of 10(-6)/sec in air and artificial seawater under anodic and cathodic applied potentials. The tensile ductility drop in artificial seawater was compared to air and evaluated as the resistance to SCC. It was found that both specimens showed intergranular cracking in artificial seawater under both anodic and cathodic applied potentials. The intergranular SCC was more severe under anodic applied potential than cathodic applied potential. However the sensitivity to SCC in artificial seawater was substantially reduced in Fe19Mn19Cr0.6N specimen with higher Cr and N content, as compared to the Fe18Mn3Cr0.1N specimen under both applied potentials. Potentiodynamic tests in artificial seawater showed an increase in pitting corrosion potential, rather than corrosion potential, with increasing Cr and N content in high-Mn steel. The SCC behavior of high-Mn steels with different Cr and N contents was discussed based on micrographic and fractographic observations.
URI
http://oasis.postech.ac.kr/handle/2014.oak/100301
ISSN
1738-8228
Article Type
Article
Citation
KOREAN JOURNAL OF METALS AND MATERIALS, vol. 57, no. 10, page. 624 - 631, 2019-10
Files in This Item:
There are no files associated with this item.

qr_code

  • mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Researcher

 KIM, SUNG JOON
Graduate Institute of Ferrous Technology
Read more

Views & Downloads

Browse