In this study, the deformable titanium (Ti) particles reinforced AZ91 composite was successfully prepared by powder metallurgy and subsequent extrusion. The mechanical properties microstructural evolution of pure 5Ti/AZ91 were studied. yield strength, ultimate tensile elongation are measured to be 212 MPa, 323 10.1%, respectively. Microstructure analysis revealed that Ti elongated along extrusi...

The solidification microstructures formed in a model 6082 alloy with 0.2–1.0 wt % Fe were examined under different cooling rates and the effects of 0.5 Mn Al–5Ti–1B grain refiner addition investigated. results compared against Thermo-Calc, differential scanning calorimetry (DSC) curve analysis. promotes primary-Al refinement from growth restriction constitutional undercooling but increases detr...

This research investigated the effect of Fe on grain refinement recycled A 356 alloy refined by Al-5Ti-1B master using macrostructure examination and chemical composition analysis. Results showed that as recycling number increased, refining performance decreased, particularly in subsequence process. The decreased concentration titanium boron were responsible for degraded A356 alloy. Appropriate...

this research concentrates on the effects of low frequency, vertical mechanical vibration during solidification on the microstructure and mechanical properties of a380 aluminum alloy. two series of sr-modified and al-5ti-b grain refined a380 alloy samples were solidified in both static and dynamic conditions in the frequency and amplitude of 60 hz and 0.2 m, respectively. their physical, micro-...

Closed-cell A356 aluminum alloy foams refined and modified were successfully fabricated by using barite calcium carbonate as thickening foaming agents, respectively. A melt treatment consisting of adding master alloys Al-5Ti-1B Al-10Sr for refining the dendritic microstructure modifying primary eutectic silicon, respectively, included in process. The mechanical properties manufactured analyzed ...