M.Sc. Tezi Görüntüleme

Student:	Hamza ÇOLAK
Supervisor:	Prof. Dr. Murat AYDIN 2020
Department:	Makine Mühendisliği
Institution:	Graduate School of Natural and Applied Sciences
University:	Karadeniz Technical University Turkey

Title of the Thesis:	INVESTIGATION OF FATIGUE BEHAVIOR OF ZINC-ALUMINUM BASED
Level:	M.Sc.
Acceptance Date:	17/1/2020
Number of Pages:	40
Registration Number:	i3724

Summary:

In this study, Zn - (%85,90,95)Al and Zn-85Al-2Cu alloys containing high percentage of aluminum were produced by permanent mould casting. The microstructure and mechanical properties and fatigue behavior of the alloys were determined in detail.

Among the binary Zn-Al alloys, the highest fatigue life was obtained from Zn-85Al alloy having the highest hardness and strength values and the lowest fatigue life was obtained from Zn-95Al alloy. In this study, it was also observed that 2% copper additive to Zn-85Al alloy significantly increased the hardness and strength values but did not provide the expected increase in fatigue life and fatigue strength value. Furthermore, it was determined that the fatigue cracks generally initiated at the porosities and propogated along the grain boundaries.

As a result of the correlations, it was determined that the fatigue behavior of the alloys can be expressed by Basquin’s law.

Keywords: Zinc-Aluminum Alloys, Fatigue Life, Fatigue Strength, High Aluminum Ratio, Addition of Copper, Basquin’s Law