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Residual Stress in Stainless Steels after Surface Grinding and its Effect on Chloride Induced SCC
Dept of Materials Science, Dalarna University, Sweden.
Linköping University, Department of Management and Engineering, Engineering Materials. Linköping University, Faculty of Science & Engineering.
KTH och Jernkontoret, Stockholm.
Corrosion Dept, Avesta Research Centre, Outokumpu Stainless AB, Avesta.
2017 (English)In: Residual Stresses 2016: ICRS-10, Materials Research Proceedings 2 (2017), Materials Research Forum , 2017, Vol. 2, 289-294 p.Conference paper, Published paper (Refereed)
Abstract [en]

The induced residual stresses in stainless steels as a consequence of surface grinding as well as their influence on the chloride induced stress corrosion cracking (SCC) susceptibility have been investigated. Three types of materials were studied: 304L austenitic stainless steel, 509 ferritic stainless steel and 2304 duplex stainless steel. Surface grinding using 60# and 180# grit size abrasives was performed for each material. Residual stress depth profiles were measured using X-ray diffraction. The susceptibility to stress corrosion cracking was evaluated in boiling MgCl2 according to ASTM G36. Specimens were exposed without applying any external loading to evaluate the risk for SCC caused solely by residual stresses. Induced residual stresses and corrosion behavior were compared between the austenitic, ferritic and duplex stainless steels to elucidate the role of the duplex structure. For all materials, the grinding operation generated tensile residual stresses in the surface along the grinding direction but compressive residual stresses perpendicular to the grinding direction. In the subsurface region, compressive stresses in both directions were present. Microcracks initiated due to high grinding-induced tensile residual stresses in the surface layer were observed in austenitic 304L and duplex 2304, but not in the ferritic 4509. The surface residual stresses decreased significantly after exposure for all specimens.

Place, publisher, year, edition, pages
Materials Research Forum , 2017. Vol. 2, 289-294 p.
Series
Materials Research Proceedings, ISSN 2474-395X
Keyword [en]
Grinding, Stainless Steel, Residual Stress, Stress Corrosion Cracking
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:liu:diva-134364DOI: 10.21741/9781945291173-49ISI: 000401041500049ISBN: 9781945291166 (print)ISBN: 9781945291173 (electronic)OAI: oai:DiVA.org:liu-134364DiVA: diva2:1072167
Conference
International Conference Residual Stress ICRS-10, 4-8 July 2016, Sydney, Australien.
Available from: 2017-02-07 Created: 2017-02-07 Last updated: 2017-06-13Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf