Evaluation of long-term creep rupture life of GR.91 steel by analysis of on-going creep curves

Kouichi Maruyama, Junya Nakamura, Kyosuke Yoshimi, Yuji Nagae

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

7 Citations (Scopus)

Abstract

A methodology is developed for evaluating its creep rupture life from analysis of an on-going creep curve with the aid of an Q creep curve equation. The method is applied to on-going creep curves of grade 91 steel for evaluating their rupture lives. Quick decrease in creep rupture strength has been reported recently in long-term creep of grade 91 steel. The quick decrease of the steel is discussed by using the rupture lives evaluated. The quick decrease is confirmed in the present study in the time range longer than 3×l04h at 600°C.

Original languageEnglish
Title of host publicationAdvances in Materials Technology for Fossil Power Plants - Proceedings from the 8th International Conference
EditorsJohn Shingledecker, J. Siefert, Jonathan Parker
PublisherASM International
Pages466-477
Number of pages12
ISBN (Electronic)1627081313, 9781627081313
Publication statusPublished - 2016
Event8th International Conference on Advances in Materials Technology for Fossil Power Plants - Albufeira, Algarve, Portugal
Duration: 2016 Oct 112016 Oct 14

Publication series

NameAdvances in Materials Technology for Fossil Power Plants - Proceedings from the 8th International Conference

Other

Other8th International Conference on Advances in Materials Technology for Fossil Power Plants
Country/TerritoryPortugal
CityAlbufeira, Algarve
Period16/10/1116/10/14

Keywords

  • Breakdown of creep strength
  • Omega creep curve equation
  • Rupture life evaluation

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology
  • Renewable Energy, Sustainability and the Environment

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