Influence of Structural Discontinuities on Fatigue Life of 4XXX0-Series Aluminum Alloys

• Autorzy: Zych J. , Piekło J. , Maj M. , Garbacz-Klempka A. , Piękoś M.

Identyfikatory

DOI

10.24425/amm.2019.127611

• Języki publikacji: EN

Abstrakty

EN

Fatigue investigations of two 4XXX0-series aluminum alloys (acc. PN-EN 1706) within a range of fewer than 10⁴ cycles at a coefficient of cycle asymmetry of R = –1 were performed in the current paper. The so-called modified low-cycle test, which provided additional information concerning the fatigue life and strength of the tested alloys, was also performed. The obtained results were presented in the form of diagrams: stress amplitude σ_a – number of cycles before damage N. On the basis of the microscopic images of sample fractures, the influence of the observed casting defects on the decrease of cycle numbers at a given level of stress amplitude were analyzed. Based on the images and dimensions of the observed defects, stress intensity factor K_I was analytically determined for each. Their numerical models were also made, and stress intensity factor K_I was calculated by the finite element method (FEM).

Słowa kluczowe

EN

aluminum alloys; casting defects; material fatigue; fracture mechanics; numerical calculations of FEM

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2019
• Tom: Vol. 64, iss. 2
• Strony: 765--771
• Opis fizyczny: Bibliogr. 17 poz., fot., rys., tab., wzory

Twórcy

autor

Zych J.

• AGH University of Science and Technology, Faculty of Foundry Engineering, 23 Reymonta Str., 30-059 Kraków, Poland

autor

Piekło J.

• AGH University of Science and Technology, Faculty of Foundry Engineering, 23 Reymonta Str., 30-059 Kraków, Poland

autor

Maj M.

• AGH University of Science and Technology, Faculty of Foundry Engineering, 23 Reymonta Str., 30-059 Kraków, Poland

autor

Garbacz-Klempka A.

• AGH University of Science and Technology, Faculty of Foundry Engineering, 23 Reymonta Str., 30-059 Kraków, Poland

autor

Piękoś M.

• AGH University of Science and Technology, Faculty of Foundry Engineering, 23 Reymonta Str., 30-059 Kraków, Poland

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).