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AgCl-induced hot salt stress corrosion cracking in a titanium alloy

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Title: AgCl-induced hot salt stress corrosion cracking in a titanium alloy
Authors: Shi, Y
Joseph, S
Saunders, EA
Sandala, RS
Walker, A
Lindley, TC
Dye, D
Item Type: Journal Article
Abstract: The mechanism of AgCl-induced stress corrosion cracking of Ti-6246 was examined at 500 MPa and 380 °C for 24 h exposures. SEM and STEM-EDX examination of a FIB-sectioned blister and crack showed that metallic Ag was formed and migrated along the crack. TEM analysis also revealed the presence of SnO2 and Al2O3 corrosion products mixed into TiO2. The fracture surface has a transgranular nature with a brittle appearance in the primary α phase. Long, straight and non-interacting dislocations were observed in a brittle appearance fractured primary α grain, with basal and pyramidal traces. This is consistent with a dislocation emission view of the cracking mechanism.
Issue Date: 15-Jul-2021
Date of Acceptance: 22-Apr-2021
URI: http://hdl.handle.net/10044/1/91280
DOI: 10.1016/j.corsci.2021.109497
ISSN: 0010-938X
Publisher: Elsevier
Start Page: 1
End Page: 11
Journal / Book Title: Corrosion Science
Volume: 187
Copyright Statement: © 2021 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Keywords: Science & Technology
Technology
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
Materials Science
Titanium alloys
Stress corrosion cracking (SCC)
STEM-EDX
Hydrogen embrittlement
Solid metal embrittlement
METAL-INDUCED EMBRITTLEMENT
HYDROGEN EMBRITTLEMENT
ATMOSPHERIC CORROSION
ALPHA-TITANIUM
SILVER
ANATASE
RUTILE
MODEL
PROPAGATION
MECHANISMS
Science & Technology
Technology
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
Materials Science
Titanium alloys
Stress corrosion cracking (SCC)
STEM-EDX
Hydrogen embrittlement
Solid metal embrittlement
METAL-INDUCED EMBRITTLEMENT
HYDROGEN EMBRITTLEMENT
ATMOSPHERIC CORROSION
ALPHA-TITANIUM
SILVER
ANATASE
RUTILE
MODEL
PROPAGATION
MECHANISMS
cond-mat.mtrl-sci
cond-mat.mtrl-sci
0905 Civil Engineering
0912 Materials Engineering
0913 Mechanical Engineering
Energy
Publication Status: Published
Article Number: ARTN 109497
Online Publication Date: 2021-04-27
Appears in Collections:Materials
Faculty of Natural Sciences



This item is licensed under a Creative Commons License Creative Commons