Vibration casting of aluminum A356 alloy

Demand for quality products in the aluminum industry is increasing day by day. Hence, new alloys should be developed for this purpose or the properties of the materials used should be improved by new production methods. For this reason, In this thesis, Aluminum A356 (Al7Si0,3Mg) alloy primary and secondary (scrap) alloy, which is used widely in the aluminum industry, is used. Castings performed with these alloys are repeated with vibration and without vibration. Thus, the effects of vibration on the microstructure properties and hardness of the primary and secondary aluminum have been investigated. The primary dentrite length (DAS), the distance between the secondary dentrite arms (SDAS) and the phase ratios were measured by taking microstructure images. And Brinell hardness of each sample (2.5 mm diameter, 62.5 kgf)is shown graphically. As a result of the experiments carried out, it has been observed that the vibrating casting is generally effective in reducing the distance between the primary denitrite lengths and the secondary dentrite branches in general, and the porosities in the sample are transported to the upper part of the sample by the vibration effect . The phase ratios have been found to increase or decrease according to the casting samples. It has also been found that the hardness values increase slightly with the application of vibration, but, it does not generally have the same effect in different regions of the sample surface and in the primary aluminum and secondary aluminum alloys. Keywords: Aluminum, Vibration casting, Vibrating Solidification, A356, [Al7Si0,3Mg], Hardness, Dendrite