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On the relation of microstructure and low-cycle fatigue properties of 301LN austenitic stainless steel after reversion annealing

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F15%3A00449852" target="_blank" >RIV/68081723:_____/15:00449852 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    On the relation of microstructure and low-cycle fatigue properties of 301LN austenitic stainless steel after reversion annealing

  • Original language description

    Grain refinement effect on mechanical response of austenitic stainless steel AISI 301LN to monotonic and mainly low-cycle fatigue loading was investigated. Reversion annealing based on the martensite to austenite phase transformation resulted in coarse grained (CG) and ultrafine grained (UFG) microstructure with grain sizes of 14 ?m and 1.4 ?m respectively. Fatigue behaviour was characterised by cyclic hardening/softening curves, fatigue life curves and using additional analysis of hysteresis loops forboth UFG and CG materials. Fully reversed fatigue loading of thin sheet specimens was performed with the help of anti-buckling fixtures in total strain control regime at room temperature. Two times higher yield stress of UFG material in comparison with CG counterpart resulted in considerably different stress amplitudes at the start of cycling. Nevertheless due to more pronounced cyclic hardening of the CG material the stress amplitudes of both materials before fracture are almost identic

  • Czech name

  • Czech description

Classification

  • Type

    O - Miscellaneous

  • CEP classification

    JL - Fatigue and fracture mechanics

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GA13-32665S" target="_blank" >GA13-32665S: Fatigue damage mechanisms in ultrafine grained stainless steels</a><br>

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2015

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů