Effect of Pouring Temperature and Water Cooling on the Thixotropic Semi-solid Microstructure of A319 Aluminium Cast Alloy
AUTOR(ES)
El-Mahallawi, Iman Sallah-ElDeen, Mahmoud, Tamer Samir, Gaafer, Ahmed Mohamed, Mahmoud, Fouad Helmi
FONTE
Mat. Res.
DATA DE PUBLICAÇÃO
2015-02
RESUMO
The cooling slope (CS) casting is the simplest and cheapest technique for producing feedstock materials with non-dendritic microstructure. Such materials are required for semi-solid metal (SSM) processing methods such as thixoforming. In the present investigation, the effect of the pouring temperature and the water cooling on the thixotropic microstructure of commercial A319 Al-Si cast alloy was studied. The results showed that increasing the pouring temperature slightly reduces the bulk porosity of the CS ingots. The ingots poured with water-cooling exhibited slightly lower porosity content than those poured with without water-cooling. Generally, the primary α-Al grains exhibited higher shape factor near the edge of ingot than the middle and center. Ingots poured with water-cooling exhibited lower grain size and shape factor than those poured without water-cooling. Increasing the pouring temperature increases the size α-Al grains.
Documentos Relacionados
- Effect of Process Parameters on the Microstructure of Semi-solid ZL101 Aluminum Alloy
- An Apparatus for Tubing Semi-Solid Media
- The Use of Semi-solid Agar for the Detection of Bacterial Motility1
- Delayed Gastric Emptying of Semi-solid diets in Patients with Chagasic Megaesophagus
- Effect of Solid Solution Temperature on Microstructure and Corrosion Resistance of CoNiCrMo Alloy