| Partner: G Lesiuk |
Ostatnie publikacje
| 1. | Macek W.♦, Sitek R.♦, Podulka P.♦, Lesiuk G.♦, Zhu S.♦, Liu X.♦, Kopeć M., Fractography of Haynes 282 alloy manufactured by DMLS after tensile and HCF, Journal of Constructional Steel Research, ISSN: 1873-5983, DOI: 10.1016/j.jcsr.2025.109623, Vol.232, No.109623, pp.1-12, 2025 Streszczenie: In this paper, the fracture surface topography of additively manufactured Haynes 282 alloy subjected to tensile and high-cycle fatigue loading was investigated. Haynes 282 alloy bars were printed in three different directions relative to the base plate (0°, 45°, and 90°) via Direct Metal Laser Sintering (DMLS) under an argon protective atmosphere. The specimens were subjected to monotonic tensile loading and fatigue testing under load control using full tension and compression cyclic loading (R = −1) in the range of stress amplitude from ±550 MPa to ±800 MPa. The entire surface topography was evaluated by using a 3D non-contact confocal technique and post-failure specimens after a fatigue test performed at three stress amplitudes, ±650 MPa, ±700 MPa and ±750 MPa. Such an attempt was proposed to analyse the fatigue response of AM Haynes 282 in the region near its yield strength. It was found that the printing orientation and the stress amplitude have a strong impact on service life and fracture surface characteristics. Finally, a surface topography parameter involving the mass density of furrows, root-mean-square height, and fractal dimension was successfully combined with the stress amplitude to estimate the fatigue life. The findings offer a novel approach to fatigue life prediction based on post-failure surface analysis, providing valuable insights for industrial applications and forensic engineering. Słowa kluczowe: Nickel alloys,Fatigue,Additive manufacturing,Direct Metal Laser Sintering (DMLS),Fracture,Surface topography Afiliacje autorów:
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