Properties and microstructure of brass under variable loading

• Autorzy: Mroziński S. , Dymski S.
• Języki publikacji: EN

Abstrakty

EN

In the paper there were presented changes of properties and microstructure in the specimens made of CuZn37 brass under fatigue test. During the analysis there were used parameters of hysteresis loop and microstructure changes for different levels of fatigue damage, that were registered during the tests. Basing on the analysis of three hysteresis loop parameters: stress amplitude, plastic strain amplitude and plastic strain energy deltaWpl, it has been found that the smallest changes are observed for the energy deltaWpl. Microstructure observations of brass specimens for various damage levels showed that fatigue damage cumulation is also visible in the grains of alfa phase. Plastic strain of the brass was characterized by the presence of creep strands inside the grains.

Słowa kluczowe

EN

damage; cyclic properties; failure; creep; brass

• Wydawca: Faculty of Ocean Engineering and Ship Technology, Gdańsk University of Technology
• Czasopismo: Journal of Polish CIMAC
• Rocznik: 2010
• Tom: Vol. 5, no 3
• Strony: 113--120
• Opis fizyczny: Bibliogr. 7 poz., rys., tab.

Twórcy

autor

Mroziński S.

autor

Dymski S.

• University of Technology and Life Science Department of Machine Design, Mechanical Engineering Faculty, ul. Prof. S. Kaliskiego 7, 85-789 Bydgoszcz, Poland,

Bibliografia

• [1] Tucker, L.E., A Procedure for Designing Against Fatigue Failure of Notched Parts, Society of Automotive Engineers, Inc., SAE Paper No 720265, New York 1972.
• [2] PN-84/H-04334: Badania niskocyklowego zmczenia metali.
• [3] Kocańda, S., Kocańda, A., Niskocyklowa wytrzymałość zmęczeniowa metali, PWN Warszawa 1989.
• [4] Kocańda, S., Zmęczeniowe pkanie metali. WNT, Warszawa 1985.
• [5] Kocańda, S., Kocańda, D., Fraktografia. Badania mikrobudowy przełomów zmęczeniowych w latach 1954-2004, Przegld mechaniczny R.LXIV, Z1 (2005).
• [6] Wyrzykowski, J.W., Pleszakow, E., Sieniawski, J., Odkształcenie i pkanie metali, WNT, Warszawa 1999.
• [7] Ramberg, W., Osgood, W.R., Description of stress-strain curves by three parameters, NACA, Tech.Note, No. 402, 1943.