Simulation Fluidity Test for Semisolid Squeeze Casting

Optimization and utilization of semisolid casting process for semisolid welding of Al-6061 alloy

Semisolid processing is one of the modern routes in sound and near net shape parts production.  Preparation of semisolid slurry using a cooling slope is increasingly becoming popular, primarily because of its simplicity in design and ease of control of the process. In this research, the microstructures of Al6061 semisolid alloy cast via a miniature cooling slope were investigated. The propertie...

The densification mechanism of squeeze casting

The solidification process during squeeze casting is analyzed based on the classical solidification and plastic deformation theory. The linear relationship between punch velocity and the solidification rate is established if the density change of molten meals is neglected. To obtain defect-free castings, the punch velocity should be larger than the solidification rate. The densification mechani...

Semisolid Processing of Al/β-SiC Composites by Mechanical Stirring Casting and High Pressure Die Casting

Putting the Squeeze on Test Sequences

Dynamic test sequence compaction is an effective means of reducing test application time and often results in higher fault coverages and reduced test generation time as well. A new algorithm for dynamic test sequence compaction is presented that uses genetic techniques to evolve test sequences. Test sequences provided by a test generator and previously evolved sequences already included in the ...

Semisolid casting with ultrasonically melt-treated billets of Al-7mass%Si alloys

The demand for high performance cast aluminum alloy components is often disturbed by increasing impurity elements, such as iron accumulated from recycled scraps. It is strongly required that coarse plate-like iron compound of β-Al5FeSi turns into harmless form without the need for applying refining additives or expensive virgin ingots. The microstructural modification of Al-7mass%Si alloy bille...