Abstract In this paper,the influence of different Zr addition amounts on the microstructure and tensile properties A356 alloy modified by 0.3wt%Yb in cast state T6 heat-treated were systematically investigated. The results show that adding basis can further refine α-Al eutectic Si branches. When content is 0.25wt%, has smallest grain size 133µm, aspect ratio 1.6. However, excessive will weaken ...

The present work reflects the effects of trace addition copper (up to 1 wt.%) and zinc (0.5 on microstructure hardness property heat treated A356 (Al-7Si) alloy. Small amount was introduced into in both atomic form (alloy) powder (composite) its age hardening behaviour were investigated. To enhance wettability during composite fabrication solid solution strengthening alloys, a small quantity ma...

Abstract In this study, the effects of mould materials on microstructure and mechanical properties of cast A356 Al alloy were investigated. The alloy was poured into three different moulds. Then the samples were homogenised and applied T6 heat treatment. The optical, Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS) studies were made. Secondary dendrite arm spacing (SD...

A comprehensive methodology that takes into account alloy solidification, shrinkage-driven interdendritic fluid flow, hydrogen precipitation, and porosity evolution has been developed for the prediction of microporosity fraction in aluminum A356 alloy castings. The mathematical models presented are implemented in a computational framework consistent with those of commercial casting codes, allow...

The aim of this work was WC distribution in base Al-Si-Mg (A356) alloy as reinforcing agent. WC Solid particles in the sub-23-nm size range added to melted alloy by centrifuge casting. The cylinder tube without gap was obtained. FESEM and OPM results show that the distribution depends upon the rotational speeds of the mould and centrifugal casting conditions. According to the MAP results, durin...