Evidence for dealloying of austenitic stainless steels in simulated stress corrosion crack environments

R. C. Newman; R. R. Corderman; K. Sieradzki

doi:10.1179/000705989798270261

Evidence for dealloying of austenitic stainless steels in simulated stress corrosion crack environments

R. C. Newman, R. R. Corderman, K. Sieradzki

Research output: Contribution to journal › Article › peer-review

42 Scopus citations

Abstract

Austenitic stainless steels (alloys 304, 316, 310) have been immersed in acidified 15M LiCI solutions at 90°C and analysed by Auger electron spectroscopy. The tarnish films formed on the 304 and 316 steels contain some oxygen, but otherwise have compositiondepth profiles similar to those of dealloyed metallic layers. Minimal tarnishing occurs on the 310 alloy unless thiourea is added or the temperature is raised to 136° C. In all cases the tendency for deal/oying is closely related. to the tendency for transgranular stress corrosion cracking (SCC) in 15M LiCI solution. The results are consistent with the view that SCC occurs by film induced cleavage, where the film is a dealloyed layer afew tens of nanometres in thickness.

Original language	English (US)
Pages (from-to)	143-148
Number of pages	6
Journal	British Corrosion Journal
Volume	24
Issue number	2
DOIs	https://doi.org/10.1179/000705989798270261
State	Published - Jan 1989
Externally published	Yes

ASJC Scopus subject areas

General Materials Science
Metals and Alloys

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10.1179/000705989798270261

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title = "Evidence for dealloying of austenitic stainless steels in simulated stress corrosion crack environments",

abstract = "Austenitic stainless steels (alloys 304, 316, 310) have been immersed in acidified 15M LiCI solutions at 90°C and analysed by Auger electron spectroscopy. The tarnish films formed on the 304 and 316 steels contain some oxygen, but otherwise have compositiondepth profiles similar to those of dealloyed metallic layers. Minimal tarnishing occurs on the 310 alloy unless thiourea is added or the temperature is raised to 136° C. In all cases the tendency for deal/oying is closely related. to the tendency for transgranular stress corrosion cracking (SCC) in 15M LiCI solution. The results are consistent with the view that SCC occurs by film induced cleavage, where the film is a dealloyed layer afew tens of nanometres in thickness.",

author = "Newman, {R. C.} and Corderman, {R. R.} and K. Sieradzki",

note = "Funding Information: This research was supported at BNL by the US Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences, under contract no. DE-Ae02-76eHOO016.",

year = "1989",

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T1 - Evidence for dealloying of austenitic stainless steels in simulated stress corrosion crack environments

AU - Newman, R. C.

AU - Corderman, R. R.

AU - Sieradzki, K.

N1 - Funding Information: This research was supported at BNL by the US Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences, under contract no. DE-Ae02-76eHOO016.

PY - 1989/1

Y1 - 1989/1

N2 - Austenitic stainless steels (alloys 304, 316, 310) have been immersed in acidified 15M LiCI solutions at 90°C and analysed by Auger electron spectroscopy. The tarnish films formed on the 304 and 316 steels contain some oxygen, but otherwise have compositiondepth profiles similar to those of dealloyed metallic layers. Minimal tarnishing occurs on the 310 alloy unless thiourea is added or the temperature is raised to 136° C. In all cases the tendency for deal/oying is closely related. to the tendency for transgranular stress corrosion cracking (SCC) in 15M LiCI solution. The results are consistent with the view that SCC occurs by film induced cleavage, where the film is a dealloyed layer afew tens of nanometres in thickness.

AB - Austenitic stainless steels (alloys 304, 316, 310) have been immersed in acidified 15M LiCI solutions at 90°C and analysed by Auger electron spectroscopy. The tarnish films formed on the 304 and 316 steels contain some oxygen, but otherwise have compositiondepth profiles similar to those of dealloyed metallic layers. Minimal tarnishing occurs on the 310 alloy unless thiourea is added or the temperature is raised to 136° C. In all cases the tendency for deal/oying is closely related. to the tendency for transgranular stress corrosion cracking (SCC) in 15M LiCI solution. The results are consistent with the view that SCC occurs by film induced cleavage, where the film is a dealloyed layer afew tens of nanometres in thickness.

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Evidence for dealloying of austenitic stainless steels in simulated stress corrosion crack environments

Abstract

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