General corrosion and SCC tests on ODS steels in supercritical water

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Abstract

General corrosion tests and slow strain rate tensile tests (SSRT) were done on 9-20% Cr oxide dispersion strengthened (ODS) steels in supercritical water at 550 and 650oC with 100-150 ppb dissolved oxygen. Based on the results, Al-alloyed high Cr ODS steels PM2000 and MA956 have superior corrosion resistance when compared to 9-14% Cr ODS steels. In SCW at 550oC and above, it is considered that the minimum Cr-content for thin walled components should be higher than 14%. The results indicate that the ODS steels are less susceptible to stress corrosion cracking (SCC) than austenitic stainless steels or Ni-base alloys in supercritical water. However, more extensive studies with different water chemistries and strain rates should be made.
Original languageEnglish
Title of host publicationBaltica IX. International Conference on Life Management and Maintenance for Power Plants - Abstracts
EditorsPertti Auerkari, Juha Veivo
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Pages28
ISBN (Print)978-951-38-8029-3, 978-951-38-8030-9
Publication statusPublished - 2013
MoE publication typeNot Eligible
EventBALTICA IX - International Conference on Life Management and Maintenance for Power Plants - Helsinki-Stockholm, Finland
Duration: 11 Jun 201313 Jun 2013

Publication series

SeriesVTT Technology
Number107
ISSN2242-1211

Conference

ConferenceBALTICA IX - International Conference on Life Management and Maintenance for Power Plants
CountryFinland
CityHelsinki-Stockholm
Period11/06/1313/06/13

Fingerprint

corrosion
steel
oxide
strain rate
water
water chemistry
dissolved oxygen
cracking (fracture)
test

Cite this

Toivonen, A., & Penttilä, S. (2013). General corrosion and SCC tests on ODS steels in supercritical water. In P. Auerkari, & J. Veivo (Eds.), Baltica IX. International Conference on Life Management and Maintenance for Power Plants - Abstracts (pp. 28). Espoo: VTT Technical Research Centre of Finland. VTT Technology, No. 107
Toivonen, Aki ; Penttilä, Sami. / General corrosion and SCC tests on ODS steels in supercritical water. Baltica IX. International Conference on Life Management and Maintenance for Power Plants - Abstracts. editor / Pertti Auerkari ; Juha Veivo. Espoo : VTT Technical Research Centre of Finland, 2013. pp. 28 (VTT Technology; No. 107).
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Toivonen, A & Penttilä, S 2013, General corrosion and SCC tests on ODS steels in supercritical water. in P Auerkari & J Veivo (eds), Baltica IX. International Conference on Life Management and Maintenance for Power Plants - Abstracts. VTT Technical Research Centre of Finland, Espoo, VTT Technology, no. 107, pp. 28, BALTICA IX - International Conference on Life Management and Maintenance for Power Plants, Helsinki-Stockholm, Finland, 11/06/13.

General corrosion and SCC tests on ODS steels in supercritical water. / Toivonen, Aki; Penttilä, Sami.

Baltica IX. International Conference on Life Management and Maintenance for Power Plants - Abstracts. ed. / Pertti Auerkari; Juha Veivo. Espoo : VTT Technical Research Centre of Finland, 2013. p. 28 (VTT Technology; No. 107).

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

TY - CHAP

T1 - General corrosion and SCC tests on ODS steels in supercritical water

AU - Toivonen, Aki

AU - Penttilä, Sami

PY - 2013

Y1 - 2013

N2 - General corrosion tests and slow strain rate tensile tests (SSRT) were done on 9-20% Cr oxide dispersion strengthened (ODS) steels in supercritical water at 550 and 650oC with 100-150 ppb dissolved oxygen. Based on the results, Al-alloyed high Cr ODS steels PM2000 and MA956 have superior corrosion resistance when compared to 9-14% Cr ODS steels. In SCW at 550oC and above, it is considered that the minimum Cr-content for thin walled components should be higher than 14%. The results indicate that the ODS steels are less susceptible to stress corrosion cracking (SCC) than austenitic stainless steels or Ni-base alloys in supercritical water. However, more extensive studies with different water chemistries and strain rates should be made.

AB - General corrosion tests and slow strain rate tensile tests (SSRT) were done on 9-20% Cr oxide dispersion strengthened (ODS) steels in supercritical water at 550 and 650oC with 100-150 ppb dissolved oxygen. Based on the results, Al-alloyed high Cr ODS steels PM2000 and MA956 have superior corrosion resistance when compared to 9-14% Cr ODS steels. In SCW at 550oC and above, it is considered that the minimum Cr-content for thin walled components should be higher than 14%. The results indicate that the ODS steels are less susceptible to stress corrosion cracking (SCC) than austenitic stainless steels or Ni-base alloys in supercritical water. However, more extensive studies with different water chemistries and strain rates should be made.

M3 - Conference abstract in proceedings

SN - 978-951-38-8029-3

SN - 978-951-38-8030-9

T3 - VTT Technology

SP - 28

BT - Baltica IX. International Conference on Life Management and Maintenance for Power Plants - Abstracts

A2 - Auerkari, Pertti

A2 - Veivo, Juha

PB - VTT Technical Research Centre of Finland

CY - Espoo

ER -

Toivonen A, Penttilä S. General corrosion and SCC tests on ODS steels in supercritical water. In Auerkari P, Veivo J, editors, Baltica IX. International Conference on Life Management and Maintenance for Power Plants - Abstracts. Espoo: VTT Technical Research Centre of Finland. 2013. p. 28. (VTT Technology; No. 107).