Sensitization properties & IGSCC susceptibility of cerium-modified stainless steels

Yutaka Watanabe, T. Tonozuka, Tetsuo Shoji, T. Kondo, F. Masuyama

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

Effects of cerium addition to austenitic stainless steels on microstructural changes and resultant sensitization properties and IGSCC susceptibility in pressurized high-temperature water have been investigated. Ce-modifications significantly influenced precipitation behavior of carbides and resultant IGC and IGSCC resistance were either improved or degraded depending on Ce content and sensitization conditions. The material with 0.01% Ce almost always showed the lowest reactivation ratio for given heat treatments. Addition of 0.01% Ce to the steel successfully mitigated IGSCC in pressurized high-temperature water in slightly sensitized conditions, at 700°C for 10h or 14h. Higher level of Ce addition was less beneficial.

Original languageEnglish
JournalNACE - International Corrosion Conference Series
Volume1999-April
Publication statusPublished - 1999 Jan 1
EventCorrosion 1999 - San Antonio, United States
Duration: 1999 Apr 251999 Apr 30

Keywords

  • Austenitic stainless steel
  • Carbide distribution
  • Cerium
  • Pressurized high-temperature water
  • Rare earth element
  • Sensitization
  • Slow strain rate test
  • Stress corrosion cracking

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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