The effect of sensitization treatment on chloride induced stress corrosion cracking of 304L stainless steel using U-bend test

Chloride induced stress corrosion cracking (CI-SCC) commonly occurs for 300 series of austenitic stainless steels that are widely used in the petrochemical industry. The occurrence of CI-SCC requires certain circumstances such as corrosive environment, tensile stress, and susceptible material. Heat...

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Main Authors: Nur Liyana Zakaria, W.W., Kee, K.E., Ismail, M.C.
Format: Conference or Workshop Item
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.30187 /
Published: Elsevier Ltd 2019
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85092735955&doi=10.1016%2fj.matpr.2020.05.697&partnerID=40&md5=4b69aefdd98f1a0f302f6422f14b6b93
http://eprints.utp.edu.my/30187/
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spelling utp-eprints.301872022-03-25T06:36:32Z The effect of sensitization treatment on chloride induced stress corrosion cracking of 304L stainless steel using U-bend test Nur Liyana Zakaria, W.W. Kee, K.E. Ismail, M.C. Chloride induced stress corrosion cracking (CI-SCC) commonly occurs for 300 series of austenitic stainless steels that are widely used in the petrochemical industry. The occurrence of CI-SCC requires certain circumstances such as corrosive environment, tensile stress, and susceptible material. Heat treatment temperature between 550 °C-650 °C followed by cooling process causes the sensitization of austenitic type stainless steel in which a chromium-depleted band is formed adjacent to the grain boundary. In this study, the impact of sensitization on CI-SCC was examined using austenitic stainless steel grade 304L (SS 304L). The specimens were shaped into U-bend as per ASTM G30 and exposed for long-term immersion test. U-bend samples were heat sensitized at 600 °C for 2 h followed by air cooling. Samples were immersed in 0.1 wt, 1.0 wt and 3.5 wt NaCl into the water bath at temperature of ambient (baseline), 70 °C and 90 °C for 42 days. They were monitored weekly for visual examined for crack. Stereo and optical microscopy were used to identify the CI-SCC and morphology of U-bend specimens. In the beginning, pit corrosion was observed and followed by cracks growth initiated from the localized pit. The results indicated that Cl-SCC was observed for all sensitized SS 304L specimens at elevated temperature conditions which was more susceptible than the as-received type specimens. The trend indicated that the higher the temperature or chloride concentration, the shorter the time for crack initiation. There was no CI-SCC for both types of specimens at ambient condition. Two CI-SCC likelihood graphs with respect to chloride concentration versus temperature are plotted based on the test data. © 2019 Elsevier Ltd. All rights reserved. Elsevier Ltd 2019 Conference or Workshop Item NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85092735955&doi=10.1016%2fj.matpr.2020.05.697&partnerID=40&md5=4b69aefdd98f1a0f302f6422f14b6b93 Nur Liyana Zakaria, W.W. and Kee, K.E. and Ismail, M.C. (2019) The effect of sensitization treatment on chloride induced stress corrosion cracking of 304L stainless steel using U-bend test. In: UNSPECIFIED. http://eprints.utp.edu.my/30187/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description Chloride induced stress corrosion cracking (CI-SCC) commonly occurs for 300 series of austenitic stainless steels that are widely used in the petrochemical industry. The occurrence of CI-SCC requires certain circumstances such as corrosive environment, tensile stress, and susceptible material. Heat treatment temperature between 550 °C-650 °C followed by cooling process causes the sensitization of austenitic type stainless steel in which a chromium-depleted band is formed adjacent to the grain boundary. In this study, the impact of sensitization on CI-SCC was examined using austenitic stainless steel grade 304L (SS 304L). The specimens were shaped into U-bend as per ASTM G30 and exposed for long-term immersion test. U-bend samples were heat sensitized at 600 °C for 2 h followed by air cooling. Samples were immersed in 0.1 wt, 1.0 wt and 3.5 wt NaCl into the water bath at temperature of ambient (baseline), 70 °C and 90 °C for 42 days. They were monitored weekly for visual examined for crack. Stereo and optical microscopy were used to identify the CI-SCC and morphology of U-bend specimens. In the beginning, pit corrosion was observed and followed by cracks growth initiated from the localized pit. The results indicated that Cl-SCC was observed for all sensitized SS 304L specimens at elevated temperature conditions which was more susceptible than the as-received type specimens. The trend indicated that the higher the temperature or chloride concentration, the shorter the time for crack initiation. There was no CI-SCC for both types of specimens at ambient condition. Two CI-SCC likelihood graphs with respect to chloride concentration versus temperature are plotted based on the test data. © 2019 Elsevier Ltd. All rights reserved.
format Conference or Workshop Item
author Nur Liyana Zakaria, W.W.
Kee, K.E.
Ismail, M.C.
spellingShingle Nur Liyana Zakaria, W.W.
Kee, K.E.
Ismail, M.C.
The effect of sensitization treatment on chloride induced stress corrosion cracking of 304L stainless steel using U-bend test
author_sort Nur Liyana Zakaria, W.W.
title The effect of sensitization treatment on chloride induced stress corrosion cracking of 304L stainless steel using U-bend test
title_short The effect of sensitization treatment on chloride induced stress corrosion cracking of 304L stainless steel using U-bend test
title_full The effect of sensitization treatment on chloride induced stress corrosion cracking of 304L stainless steel using U-bend test
title_fullStr The effect of sensitization treatment on chloride induced stress corrosion cracking of 304L stainless steel using U-bend test
title_full_unstemmed The effect of sensitization treatment on chloride induced stress corrosion cracking of 304L stainless steel using U-bend test
title_sort effect of sensitization treatment on chloride induced stress corrosion cracking of 304l stainless steel using u-bend test
publisher Elsevier Ltd
publishDate 2019
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85092735955&doi=10.1016%2fj.matpr.2020.05.697&partnerID=40&md5=4b69aefdd98f1a0f302f6422f14b6b93
http://eprints.utp.edu.my/30187/
_version_ 1741197363982106624
score 11.62408

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