Microstructure of aluminium alloy welding under an external magnetic field

Abstract

In this paper, the effect of alternating longitudinal electromagnetic fields on the microstructure, composition segregation and solid solubility of solute elements in aluminium alloy weld beads is studied. The results show that the X-ray diffraction peaks of the deposited aluminium alloy layer under the external magnetic field are much less intense than those for the alloy prepared without the external magnetic field. The diffraction peak intensities from different crystallographic planes in the structure slightly differ under the action of different magnetic field frequencies. As the excitation current increases, the increase in Mg segregation is obvious. With an increase in the magnetic field frequency and excitation current, the external magnetic field promotes the solid solubility of solute Mg in Al.

KEYWORDS:

• External magnetic field
• aluminium alloy
• welding
• microstructure

Acknowledgements

The authors thank Senior Engineer SHEN and PhD HE for carefully reading the manuscript.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Data availability

The data used to support the findings of this study are available from the corresponding author upon request.

Additional information

Funding

This work is supported by the Fundamental Research Funds for Shenyang Institute of Engineering [grant number XNZD-1802]. This work is supported by Applied Basic Research Project of Liaoning Province [grant number 2022JH2/101300201].