A robust model for creep-fatigue life assessment

Stefan Holmström (Corresponding Author), Pertti Auerkari

    Research output: Contribution to journalArticleScientificpeer-review

    14 Citations (Scopus)

    Abstract

    High temperature components subjected to long term cyclic operation will acquire life-limiting damage from both creep and fatigue. A new robust model for creep-fatigue life assessment is proposed with a minimal set of fitting constants, and without the need to separate creep and fatigue damage or life fractions. The model is based on the creep rupture behaviour of the material with a fatigue correction described by hold time (in tension) and total strain range at temperature. The model is shown to predict the observed creep-fatigue life of ferritic steel P91, austenitic steel 316FR, and Ni alloy A230 with a scatter band close to a factor of 2.
    Original languageEnglish
    Pages (from-to)333-335
    Number of pages3
    JournalMaterials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
    Volume559
    Issue number1
    DOIs
    Publication statusPublished - 2013
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Creep
    • creep-fatigue
    • life
    • Ni alloy
    • steel

    Fingerprint Dive into the research topics of 'A robust model for creep-fatigue life assessment'. Together they form a unique fingerprint.

  • Cite this