Law of crack growth life for P92 steel under the conditions of creep-fatigue multiplication and projection of the threshold temperature of creep crack growth based on this law

A. T. Yokobori, R. Sugiura, S. Kimoto, D. Yoshino, T. Matsuzaki

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

6 Citations (Scopus)

Abstract

W-added 9Cr ferritic heat-resistant steels, ASME grade P92, are used under the high temperature creep-fatigue condition. Concerning the maintenance of the operational safety and minimizing operational costs, it is necessary to construct a law of predicting the crack growth life by clarifying the dominant factors of the crack growth life under the condition of creep-fatigue multiplication (the effect of stress holding time on the time-dependent fracture). In this study, crack growth tests under the conditions of creep-fatigue multiplication were conducted with various conditions of stress holding time, applied stress and temperatures. As a result, a unified law of predicting the crack growth life under the conditions of creep-fatigue multiplication was derived based on the concept of Q* with the transition function of crack growth life from fatigue to creep.

Original languageEnglish
Title of host publicationProceedings of the ASME Pressure Vessels and Piping Conference 2009 - Materials and Fabrication
Pages1451-1460
Number of pages10
EditionPART B
DOIs
Publication statusPublished - 2010 Jun 7
Event2009 ASME Pressure Vessels and Piping Conference - Prague, Czech Republic
Duration: 2009 Jul 262009 Jul 30

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
NumberPART B
Volume6
ISSN (Print)0277-027X

Other

Other2009 ASME Pressure Vessels and Piping Conference
CountryCzech Republic
CityPrague
Period09/7/2609/7/30

ASJC Scopus subject areas

  • Mechanical Engineering

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    Yokobori, A. T., Sugiura, R., Kimoto, S., Yoshino, D., & Matsuzaki, T. (2010). Law of crack growth life for P92 steel under the conditions of creep-fatigue multiplication and projection of the threshold temperature of creep crack growth based on this law. In Proceedings of the ASME Pressure Vessels and Piping Conference 2009 - Materials and Fabrication (PART B ed., pp. 1451-1460). (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 6, No. PART B). https://doi.org/10.1115/PVP2009-77989