Continuum damage mechanics-based creep–fatigue-interacted life prediction of nickel-based superalloy at high temperature

This paper presents a creep–fatigue-interacted lifetime prediction methodology based on continuum damage mechanics for the Ni-based superalloy under cyclic loading at high temperature. A unified life estimation model has been developed enabling stress–strain curves and cumulative damage to be predic...

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Bibliographic Details
Published inScripta materialia Vol. 57; no. 12; pp. 1149 - 1152
Main Authors Kim, Tae-Won, Kang, Dong-Hwan, Yeom, Jong-Taek, Park, Nho-Kwang
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.12.2007
Subjects
Creep
Fatigue (materials)
Life prediction
Low cycle fatigue
Mathematical models
Modeling
Nickel alloys
Nickel base alloys
Strain
Stress strain curves
Stress-strain relationships
Superalloys
Life prediction
Nickel alloys
Creep
Modeling
Low cycle fatigue
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Summary:This paper presents a creep–fatigue-interacted lifetime prediction methodology based on continuum damage mechanics for the Ni-based superalloy under cyclic loading at high temperature. A unified life estimation model has been developed enabling stress–strain curves and cumulative damage to be predicted. Four types of low cycle fatigue tests were carried out at 650 °C. The effects of the levels of strain range and strain hold time together with frequency characteristics of fatigue behavior on the lifetime were investigated.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2007.08.014