Copper plating on bonding properties of aluminium/steel explosive welded composite plate

Abstract

In order to reduce critical impact velocity and enlarge weldability window of aluminium/steel explosive welding, a chemical copper plating layer as interlayer was proposed to carry out aluminium/steel explosive welding. The results showed that the interface of the 1060/Q235 composite plate had good bonding performance, and no obvious defects such as cracks and pores were found. Copper plating as intermediate layer could enlarge aluminium/steel weldability window. The thickness of solidified melt was much thicker than that of diffusion zone. The molten copper particles participated in the formation of re-entry jet, which rotated under the action of initial jet. The presence of the Cu layer reduces the occurrence of excessive melting during welding and improves the properties of the interface.

KEYWORDS:

• Explosive welding
• copper plating
• microscopic morphology
• weldability window
• numerical simulation

Acknowledgements

This research was sponsored by the National Natural Science Foundation of China [grant number 11872002], Natural Science Foundation of Anhui Province [1808085QA06] and the Postdoctoral Foundation of Anhui Province [2019B355].

Disclosure statement

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

Additional information

Funding

This work was supported by Anhui Provincial Natural Science Foundation [grant number 1808085QA06].