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Isothermal low-cycle fatigue and fatigue–creep behaviour of 2618 aluminium alloy

  1. 1.
    0577731 - ÚFM 2025 RIV GB eng J - Journal Article
    Bartošák, M. - Šulák, Ivo - Horváth, J. - Jambor, Michal - Pilsová, L.
    Isothermal low-cycle fatigue and fatigue–creep behaviour of 2618 aluminium alloy.
    International Journal of Fatigue. Roč. 179, Feb (2024), č. článku 108027. ISSN 0142-1123. E-ISSN 1879-3452
    Institutional support: RVO:68081723
    Keywords : Low-cycle fatigue * Fatigue–creep * Aluminium alloy * Damage mechanisms * Microstructure
    OECD category: Materials engineering
    Impact factor: 6, year: 2022
    Method of publishing: Limited access
    https://www.sciencedirect.com/science/article/pii/S0142112323005285?via%3Dihub

    A series of strain-controlled Low-Cycle Fatigue (LCF) and fatigue–creep tests were performed on a 2618
    aluminium alloy for various strain amplitudes at temperatures of 20 ◦C, 160 ◦C and 195 ◦C. LCF tests at
    elevated temperatures were performed for three different strain rates between 1 × 10−4/s and 1 × 10−2/s, while
    fatigue–creep tests were performed with either tensile or compressive strain dwell. At 20 ◦C, cyclic hardening
    was associated with a high dislocation density. In contrast, a localization of plastic deformation into slip
    bands and cyclic softening were observed at 195 ◦C. The investigation of the damage mechanisms revealed
    transgranular cracking as the predominant failure mode, significantly influenced by Al9FeNi intermetallic
    particles. Finally, fatigue–creep tests were found to be more damaging than equivalent LCF tests, particularly
    at 195 ◦C, where a negative strain rate sensitivity on fatigue lifetime was evident.

    Permanent Link: https://hdl.handle.net/11104/0346922

     
     
Number of the records: 1  

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