Creep-fatigue life prediction of Alloy 617 at 950°C using an effective hold time approach

Fraaz Tahir, Yongming Liu

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

Abstract

Time Fraction Rule for calculating creep damage fraction is suitable for predicting creep-fatigue life of Alloy 617 at 950°C. However, purely strain-controlled loading waveforms cannot produce creep-dominant interaction due to rapid stress-relaxation of Alloy 617. This study employs a novel loading profile with a combination of strain and force-control to produce varying proportions of creep and fatigue damage. The Time Fraction Rule is found to be inaccurate for life prediction for this novel loading waveform. A new method for calculating the creep damage fraction is proposed with the objective of predicting creep-fatigue life for traditional purely strain-controlled and novel hybrid control loading waveforms.

Original languageEnglish (US)
Title of host publicationInternational Topical Meeting on High Temperature Reactor Technology, HTR 2016
PublisherAmerican Nuclear Society
Pages47-49
Number of pages3
ISBN (Electronic)9780894487323
StatePublished - Jan 1 2016
Event8th International Topical Meeting on High Temperature Reactor Technology, HTR 2016 - Las Vegas, United States
Duration: Nov 6 2016Nov 10 2016

Publication series

NameInternational Topical Meeting on High Temperature Reactor Technology, HTR 2016

Other

Other8th International Topical Meeting on High Temperature Reactor Technology, HTR 2016
CountryUnited States
CityLas Vegas
Period11/6/1611/10/16

ASJC Scopus subject areas

  • Nuclear Energy and Engineering
  • Energy Engineering and Power Technology

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