List of articles (by subject)
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Open Access Article
1 - Numerical simulation on melt flow in steel Continuous casting and inclusion tracing
محمد خدائی آرش حاجی پور محمود مرآتیان -
Open Access Article
2 - The effect of heat treatment and copper on the tensile properties and quality index of Al-7Si-0.35Mg-xFe alloys
رضا تقی آبادی محمد تلافی نوغانی یلدا کریمی مهسا ایرانشاهی مریم نظریIn this study, the effect of Cu addition (0.5, 1.0 and 1.5 wt%) and T6 heat treatment on the tensile properties and quality index of A356 alloy containing different amount of iron (0.5-1.5 wt%) was investigated. According to the results in as-cast condition, the additio MoreIn this study, the effect of Cu addition (0.5, 1.0 and 1.5 wt%) and T6 heat treatment on the tensile properties and quality index of A356 alloy containing different amount of iron (0.5-1.5 wt%) was investigated. According to the results in as-cast condition, the addition of copper to the iron bearing alloys increased the tensile strength by about 25% while substantially decreased the percent elongation (by almost 80%). After heat treatment, however, the tensile strength and the quality index of the alloy containing 1 wt% copper and 1.5 wt% iron were found to be increased by about 100 and 35% as compared to the base alloy, respectively. The improvement in the quality index was attributed to the precipitation hardening effect of Al2Cu and Mg2Si precipitates as well as thermal modification of eutectic silicon and iron-rich platelets, which increase the tensile strength, and ductility of the alloy. Manuscript profile -
Open Access Article
3 - Investigation of solidification mechanism and microstructure of semi-solid as cast A380 part with swarf additions injected by diecast machine
Hooman Hadian Mohsen Haddad sabzvar Mohammad MazinaniNowadays, the production of industrial components by semi-solid methods is considered as a new method. These methods are time consumable due to slurry preparation process, leading to the development of methods that allow the creation of non-dendritic structures in the s MoreNowadays, the production of industrial components by semi-solid methods is considered as a new method. These methods are time consumable due to slurry preparation process, leading to the development of methods that allow the creation of non-dendritic structures in the shortest possible time. For example, the method of enthalpy exchange Material (EEM) is one of the most common processes that results from the proximity of two materials with high and low enthalpy. In this research, the effect of adding swarf on the structure of die casting parts has been studied on aluminum alloy A380 and the possibility of structural changes in different temperature conditions has been investigated. The microstructure of the parts has changed from dendrites to globular and the microstructure consists mainly of alpha phase, eutectic and intermetallic compounds. SEM results showed that the distribution of copper and iron elements is in grain boundaries of aluminum alpha particles. Also, the solid weight fraction was calculated using the thermal analyze results and confirmed by microscopic images. Manuscript profile