Grain refinement behavior of an aluminum alloy by inoculation and dynamic nucleation

Efficient use of iron impurity in Al–Si alloys

“…It is evident that a lowtemperature holding makes the corresponding melt nucleate and grow at a shallower undercooling. Usually, a shallower undercooling means easier nucleation, and it is traditionally achieved by enhancing nucleation through specific substrates [16]. Therefore, the lowtemperature holding enhances the silicon phase nucleation, and this is consistent with the result shown in Fig.…”

Identifying the Stages during Ultrasonic Processing that Reduce the Grain Size of Aluminum with Added Al3Ti1B Master Alloy

“…For commercial purity aluminium (CP Al) this goal is currently achieved by the addition of Al-Ti-B master alloys. [1] The aim of this work is to understand the synergetic effect of ultrasonic treatment (UST) and addition of an Al3Ti1B grain refining master alloy as a possible method of achieving much finer grain sizes by improving the grain refining efficiency of the master alloy. Despite the practical issues in applying UST to large-scale industrial processes, interest in ultrasonic melt processing has been growing in recent years due to its environmental attributes of zero-emissions and energy-efficiency.…”

The role of ultrasonic treatment in refining the as-cast grain structure during the solidification of an Al–2Cu alloy

“…Using grain refinement techniques to promote the formation of a fine, uniform and equiaxed grain structure during casting processes is common industrial practice in order to improve the downstream processing for as-cast intermediate products [1,2], or structural uniformity for consistent performance, as well as mechanical properties for as-cast finished products [3]. The method widely used to refine the grain structure of a casting is by the addition of a grain refiner master alloy containing potent nucleant particles [4].…”