Influence of pulse magneto-oscillation on the efficiency of grain refiner

Abstract

Solidification experiments were carried out in Al-Cu (w(Cu) = 5%) alloy to investigate the influence of pulse magneto-oscillation (PMO) on the efficiency of the Al3Ti1B refining agent at high superheat. The experimental solidification results show that the degree of superheat has remarkable influence on the efficiency of the grain refiner. However, the application of PMO has the potential to reduce the influence of superheat variation on the efficiency of the grain refiner. Finally, the mechanism underlying this phenomenon is discussed by performing a numerical simulation to show the forced flow inside the melt caused by PMO.

Keywords

Grain refinement / Grain refiner / Pulse magneto-oscillation (PMO) / Al-Cu (w(Cu) = 5%) alloy / Solidification

Funding

National Natural Science Foundation of China http://dx.doi.org/10.13039/501100001809(51320105003)

Shanghai government(14DZ2261200)

Science and Technology Commission of Shanghai Municipality http://dx.doi.org/10.13039/501100003399(15520710800)