Surface hardening effect on the fatigue behavior of isotropic beam

• Autorzy: Nasser Sajad H. , Bader Qasim H.

Identyfikatory

DOI

10.29354/diag/154901

• Języki publikacji: EN

Abstrakty

EN

This paper is to present an experimental study of the impact of surface hardening on the high-cycle fatigue behavior of an isotropic beam. The beams made from low carbon steel (St 44-2). Surface treatments used are pack carburizing and carbonitriding. The experimental work included mechanical test, surface heat treatment, fatigue test and Microscopic inspection. The surface hardening was done by using pack-carburizing process at a temperature of 925°C holding time variation (2, 4, and 6hr) followed by quenching and tempering process, and using the carbonitriding process at a temperature of 800°C and for periods (0.5, 1 and 1.5hr) then quenching directly in water. The fatigue test was carried out by a cantilever rotating-bending system. The results of an experimental fatigue test indicate that various behaviors depend on surface heat treatment and time soaking. The findings indicate that carbonitriding has a greater impact on the fatigue strength and life than the specimen has been treated with pack carburizing. In addition, as the time soaking increase, the fatigue life will increase for both types of surface heat treatments. It was found that the specimens that were hardened using the carbonitriding process achieved a higher surface hardness as the hardness increased to 1644.62HV, while the untreated specimens were 293HV. Compared with the hardening using the pack carburizing process.

Słowa kluczowe

EN

fatigue behavior; carbonitriding; pack carburizing; S-N curve

PL

zmęczenie materiału; węgloazotowanie; krzywa S-N

• Wydawca: Polskie Towarzystwo Diagnostyki Technicznej
• Czasopismo: Diagnostyka
• Rocznik: 2022
• Tom: Vol. 23, No. 3
• Strony: art. no 2022312
• Opis fizyczny: Bibliogr. 21 poz., rys., tab.

Twórcy

autor

Nasser Sajad H.

• University of Babylon, College of Engineering, Mechanical Engineering Department, Babylon, Iraq

autor

Bader Qasim H.

• University of Babylon, College of Engineering, Mechanical Engineering Department, Babylon, Iraq

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).