location: Current position: Home >> Scientific Research >> Paper Publications

Simulation on solidification of an Al-Ni alloy under electromagnetic stirring

Hits:

Indexed by:期刊论文

Date of Publication:2012-08-01

Journal:CHINA FOUNDRY

Included Journals:SCIE、Scopus

Volume:9

Issue:3

Page Number:258-262

ISSN No.:1672-6421

Key Words:electromagnetic stirring; numerical simulation; Al-Ni alloy; solidification

Abstract:The microstructure of Al-Ni alloy has a significant influence on its performance while electromagnetic stirring is one of the most effective methods for control of solidification structure of Al alloy. To investigate the effect of electromagnetic stirring on the solidification of the ingot, the solidification of the Al-50Ni alloy in vacuum with electromagnetic stirring was described by numerical simulation in this paper; and a three dimensional mathematical model was established. The electromagnetic field was simulated by ANSYS software and the thermal-flow field was simulated by FLUENT software. The coupling between the electromagnetic field and the thermal-flow field was. implemented by user-defined subroutines. It is found that the current intensity has significant influences on the fluid flow and the microstructure of the alloy. The simulation results agree well with the experimental results, and the optimum current intensity under the exprimerital conditions is 80 A, while the frequency is 50 Hz.

Pre One:In situ study on solidification controlled by electric current pulse in Al-Bi immiscible alloy via synchrotron radiation imaging technology

Next One:Grain refinement mechanism of pure aluminum by inoculation with Al-B master alloys