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Payne, Shirley and McIntyre, P.
(1988).
URL: http://www.scopus.com/record/display.url?eid=2-s2....
Abstract
The influence of grain boundary microstructure on the susceptibility of thermally treated (TT) Inconel Alloy 600 to intergranular attack (IGA) and stress corrosion cracking (SCC) in 30%NaOH plus 10% Na2SO4 at 350ºC was investigated. Both mill-annealed (MA) and laboratory solution-annealed alloys were aged at 700 C to establish the effect of intitial processing on the response to thermal treatment. Treatments of 1 h or more at 700ºC improved the SCC resistance of solution-annealed material but did not improve the performance of MA material containing a high density of intraganular carbides. The poor behavior after thermal treatment is associated with the formation of small M23C6 carbides growing at a high angle to the boundaries and the development into cellular colonies. This is attributed to the use of a MA temperature that was too low to take into solution sufficient carbon for the development of semicontinuous grain boundary carbides during the subsequent TT process.
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- Item ORO ID
- 24266
- Item Type
- Journal Item
- ISSN
- 0010-9312
- Project Funding Details
-
Funded Project Name Project ID Funding Body Not Set Not Set CEGB - Keywords
- corrosion; stress corrosion cracking; heat treatment; annealing; nickel metallography; grain boundaries; Inconel 600; intergranular attack; precipitation; sodium hydroxide; sodium sulfate; nickel chromium iron alloys
- Academic Unit or School
-
Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM) - Copyright Holders
- © 2004 Elsevier B. V.
- Depositing User
- Shirley Northover