Yazar "Gurtaran, M." seçeneğine göre listele

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    The Effect of Bifilm and Sr Modification on the Mechanical Properties of AlSi12Fe Alloy
    (Polska Akad Nauk, Polish Acad Sciences, 2020) Uludağ, Muhammet; Gurtaran, M.; Dispinar, D.
    The microstructure of Al-Si alloy has coarse silicon and this structure is known dangerous for mechanical properties due to its crack effect. Sr addition is preferred to modify the coarse silica during solidification. Additionally, bifilms (oxide structure) are known as a more dangerous defect which is frequently seen in light alloys. It is aimed at that negative effect of bifilms on the properties of the alloys tried to be removed by the degassing process and to regulate the microstructure of the alloy. In this study, the effect of degassing and Sr modification on the mechanical properties of AlSi12Fe alloy was investigated, extensively. Four different parameters (as-received, as-received + degassing, Sr addition, Sr addition + degassing) were studied under the same conditions environmentally. The microstructural analyses and mechanical tests were done on cast parts. All data obtained from the experimental study were analyzed statistically by using statistical analysis software. It was concluded from the results that Sr addition is very dangerous for AlSi12Fe alloy. It can be suggested that to reach high mechanical properties and low casting defects, the degassing process must be applied to all castings whereas Sr addition should not be preferred.
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    Effect of quenching mediums on mechanical properties of Al-Cu alloy
    (Stowarzyszenie Techniczne Odlewnikow Polskich/Polish Foundrymen's Association, 2018) Uludağ, Muhammet; Gurtaran, M.; Dispinar, D.
    [No abstract available]
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    Efficiency of Ti addition in A356 alloy under different holding time
    (Stowarzyszenie Techniczne Odlewnikow Polskich/Polish Foundrymen's Association, 2018) Uludağ, Muhammet; Gurtaran, M.; Dispinar, D.
    [No abstract available]
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    Investigation of casting quality change of A356 by duration in liquid state
    (Springer International Publishing, 2019) Uludağ, Muhammet; Gurtaran, M.; Dispinar, D.
    This study aims to investigate how casting quality change in aluminum melt during the holding period in liquid state. 10 kg of ingot was melted in a SiC crucible by using an electrical furnace. A sample was taken every five minutes from 0 to 55 min after the alloy was melted. Reduced pressure test (RPT) samples were collected to be solidified under 80 mbar. All samples were sectioned into two parts vertically, and one of them was prepared for metallographic examination. Surface of the samples was subjected to image analysis by using via image analysis software. Bifilm index and bifilm area were analyzed in detail. As a result, it can be concluded that first 30 min of liquid metal is important, because casting quality tends to get worse after 30 min. © The Minerals, Metals & Materials Society 2019.