Investigations on the mechanisms of PWSCC of strain hardened austenitic stainless steels

T. Couvant; L. Legras; C. Pokor; F. Vaillant; Y. Brechet; J. M. Boursier; P. Moulart

Investigations on the mechanisms of PWSCC of strain hardened austenitic stainless steels

T. Couvant, L. Legras, C. Pokor, F. Vaillant, Y. Brechet, J. M. Boursier, P. Moulart

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

Abstract

Limited cases of stress corrosion cracking (SCC) have been recently observed in French PWRs (heaters of pressurizers), in high strain hardened non-sensitized austenitic stainless steels exposed to primary environment. Consequently, a R&D program has been conducted, in addition to hot laboratories investigations, in order to understand the mechanisms responsible for PWSCC at 360°C. Stress corrosion tests were performed on AISI 304L and 316L, in hydrogenated primary environments (7.2 < pH_320°C < 9.2) at 360°C. Particular attention was directed towards the correlation between selective oxidation and strain localization due to microtwining and strain incompatibilities. Based on electron microscope examinations (SEM and TEM), a description of the possible contribution of the strain localization in the mechanism of PWSCC is proposed. Experimental results are finally compared to hot laboratory observations of pressurizer heaters.

Original language	English
Title of host publication	Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007
Pages	499-514
Number of pages	16
Publication status	Published - 2007
Externally published	Yes
Event	International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007 - Whistler, Canada Duration: 19 Apr 2007 → 23 Apr 2007 Conference number: 13th

Publication series

Name	Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007
Volume	1

Conference

Conference	International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007
Country/Territory	Canada
City	Whistler
Period	19/04/07 → 23/04/07

Cite this

Couvant, T., Legras, L., Pokor, C., Vaillant, F., Brechet, Y., Boursier, J. M., & Moulart, P. (2007). Investigations on the mechanisms of PWSCC of strain hardened austenitic stainless steels. In Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007 (pp. 499-514). (Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007; Vol. 1).

Couvant, T. ; Legras, L. ; Pokor, C. et al. / Investigations on the mechanisms of PWSCC of strain hardened austenitic stainless steels. Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007. 2007. pp. 499-514 (Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007).

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title = "Investigations on the mechanisms of PWSCC of strain hardened austenitic stainless steels",

abstract = "Limited cases of stress corrosion cracking (SCC) have been recently observed in French PWRs (heaters of pressurizers), in high strain hardened non-sensitized austenitic stainless steels exposed to primary environment. Consequently, a R&D program has been conducted, in addition to hot laboratories investigations, in order to understand the mechanisms responsible for PWSCC at 360°C. Stress corrosion tests were performed on AISI 304L and 316L, in hydrogenated primary environments (7.2 < pH320°C < 9.2) at 360°C. Particular attention was directed towards the correlation between selective oxidation and strain localization due to microtwining and strain incompatibilities. Based on electron microscope examinations (SEM and TEM), a description of the possible contribution of the strain localization in the mechanism of PWSCC is proposed. Experimental results are finally compared to hot laboratory observations of pressurizer heaters.",

author = "T. Couvant and L. Legras and C. Pokor and F. Vaillant and Y. Brechet and Boursier, {J. M.} and P. Moulart",

year = "2007",

language = "English",

isbn = "9781605600598",

series = "Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007",

pages = "499--514",

booktitle = "Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007",

note = "International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007 ; Conference date: 19-04-2007 Through 23-04-2007",

}

Couvant, T, Legras, L, Pokor, C, Vaillant, F, Brechet, Y, Boursier, JM & Moulart, P 2007, Investigations on the mechanisms of PWSCC of strain hardened austenitic stainless steels. in Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007. Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007, vol. 1, pp. 499-514, International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007, Whistler, British Columbia, Canada, 19/04/07.

Investigations on the mechanisms of PWSCC of strain hardened austenitic stainless steels. / Couvant, T.; Legras, L.; Pokor, C. et al.
Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007. 2007. p. 499-514 (Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007; Vol. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

TY - GEN

T1 - Investigations on the mechanisms of PWSCC of strain hardened austenitic stainless steels

AU - Couvant, T.

AU - Legras, L.

AU - Pokor, C.

AU - Vaillant, F.

AU - Brechet, Y.

AU - Boursier, J. M.

AU - Moulart, P.

N1 - Conference code: 13th

PY - 2007

Y1 - 2007

N2 - Limited cases of stress corrosion cracking (SCC) have been recently observed in French PWRs (heaters of pressurizers), in high strain hardened non-sensitized austenitic stainless steels exposed to primary environment. Consequently, a R&D program has been conducted, in addition to hot laboratories investigations, in order to understand the mechanisms responsible for PWSCC at 360°C. Stress corrosion tests were performed on AISI 304L and 316L, in hydrogenated primary environments (7.2 < pH320°C < 9.2) at 360°C. Particular attention was directed towards the correlation between selective oxidation and strain localization due to microtwining and strain incompatibilities. Based on electron microscope examinations (SEM and TEM), a description of the possible contribution of the strain localization in the mechanism of PWSCC is proposed. Experimental results are finally compared to hot laboratory observations of pressurizer heaters.

AB - Limited cases of stress corrosion cracking (SCC) have been recently observed in French PWRs (heaters of pressurizers), in high strain hardened non-sensitized austenitic stainless steels exposed to primary environment. Consequently, a R&D program has been conducted, in addition to hot laboratories investigations, in order to understand the mechanisms responsible for PWSCC at 360°C. Stress corrosion tests were performed on AISI 304L and 316L, in hydrogenated primary environments (7.2 < pH320°C < 9.2) at 360°C. Particular attention was directed towards the correlation between selective oxidation and strain localization due to microtwining and strain incompatibilities. Based on electron microscope examinations (SEM and TEM), a description of the possible contribution of the strain localization in the mechanism of PWSCC is proposed. Experimental results are finally compared to hot laboratory observations of pressurizer heaters.

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M3 - Conference Paper

AN - SCOPUS:51649094668

SN - 9781605600598

T3 - Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007

SP - 499

EP - 514

BT - Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007

T2 - International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007

Y2 - 19 April 2007 through 23 April 2007

ER -

Couvant T, Legras L, Pokor C, Vaillant F, Brechet Y, Boursier JM et al. Investigations on the mechanisms of PWSCC of strain hardened austenitic stainless steels. In Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007. 2007. p. 499-514. (Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007).

Investigations on the mechanisms of PWSCC of strain hardened austenitic stainless steels

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