Characterization of austenitic stainless steel pipe welds after prolonged power plant exposure

Hannu Hänninen, Pertti Aaltonen, Pertti Nenonen, Rachel Jargelius, Börje Lehtinen

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)

Abstract

An austenitic stainless steel (AISI 304) pipe weldment, which had been in operation about 45,000 h at 230°C in the Ringhals 1 BWR plant, was characterized using electrochemical sensitization testing methods (electrochemical potentiokinetic reactivation [EPR] and double-loop EPR), as well as transmission electron microscopy. The weld heat-affected zone (HAZ) showed a sensitized zone between two and five mm from the fusion line in which grain boundary carbides formed almost a continuous chain, and Cr-depletion was evident.
Original languageEnglish
Pages (from-to)114-123
Number of pages10
JournalCorrosion
Volume48
Issue number2
DOIs
Publication statusPublished - 1992
MoE publication typeA1 Journal article-refereed

Keywords

  • welding

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