Small punch creep test of service-exposed SUS 316 HTB superheater tubes of fossil boilers

Maribel L. Saucedo-Muñoz, Shin Ichi Komazci, Toru Takahashi, Toshiyuki Hashida, Tetsuo Shoji, Victor M. Lopez-Hirata

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The creep properties were evaluated in a SUS 316 HTB austenitic stainless steel by using the small-punch creep test. The applied loads were 234, 286. 338, 408 and 478 N at 650 °C, and 199 and 234 N at 700 °C. The creep curves were similar to those obtained from a conventional uniaxial creep test. That is, they exhibited clearly the three creep stages. The width of secondary creep stage and rupture time tr decreased with the increase in testing load level. The creep rupture strength for the service-exposed material was lower than that of the as-received material at high testing loads. While, the creep resistance behavior was opposite at relatively low load levels. This difference in creep resistance was explained based on the difference in the creep deformation and/or fracture mechanism.

Original languageEnglish
Title of host publicationTMS 2010 - 139th Annual Meeting and Exhibition - Supplemental Proceedings
Pages729-736
Number of pages8
Publication statusPublished - 2010 May 21
EventTMS 2010 - 139th Annual Meeting and Exhibition - Seattle, WA, United States
Duration: 2010 Feb 142010 Feb 18

Publication series

NameTMS Annual Meeting
Volume3

Other

OtherTMS 2010 - 139th Annual Meeting and Exhibition
CountryUnited States
CitySeattle, WA
Period10/2/1410/2/18

Keywords

  • Creep
  • Small-punch test
  • Stainless steel

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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