Investigation of Corrosion Fatigue Crack Growth in Aluminium Alloy-Based Metal Matrix Composites: A Comparative Study

Authors : İlyas Uygur, Hüsnü Gerengi

Pages : 372-382

Doi:10.29130/dubited.1562991

View : 20 | Download : 23

Publication Date : 2025-01-30

Article Type : Research Paper

Abstract :The need for high-strength alloys that can withstand the harsh conditions of saline environments is a common challenge in engineering applications. These materials must maintain their structural integrity under corrosive conditions. Corrosion fatigue of aluminium-based composites is an important consideration in the design and use of these materials, as it can significantly reduce the strength and service life of the composite. Corrosion fatigue occurs when a material is repeatedly exposed to a corrosive environment and cyclic loading, leading to the formation of cracks and eventual failure. The susceptibility of aluminium-based composites to corrosion fatigue depends on several factors, including the type and amount of reinforcement used, the composition of the matrix and the specific corrosive environment. It is therefore important that these factors are carefully considered and appropriate testing carried out to ensure the longevity and reliability of the composite in its intended application. In this study, fatigue crack growth tests were carried out at four different stress ratios on 2124-T4 +25% SiCp/Al composites at room temperature and in a 3.5% salt solution environment. It was found that the influence of the salt solution at low stress ratios was significant on the fatigue crack growth rates. However, the effect of the saline environment on the fatigue response diminished at high stress ratios.
Keywords : Korozyon yorulması, yorulma çatlak ilerlemesi, Al-alaşım kompozitler, tuz çözeltisi, hidrojen gevrekleşmesi