Number of the records: 1
Isothermal low-cycle fatigue and fatigue–creep behaviour of 2618 aluminium alloy
- 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