Effects of pulse-impact on the welding of SiCP/Al-6061 aluminium matrix composites

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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  • Yeeli Kwok


Original languageEnglish
Pages (from-to)2298-2304
Journal / PublicationMaterials Science and Technology (United Kingdom)
Issue number18
Online published20 Oct 2017
Publication statusPublished - Dec 2017
Externally publishedYes


The effects of pulse-impact on liquid-phase pulse-impact diffusion welding of an SiCp/Al-6061 aluminium matrix composite were investigated. The results show that under the influence of pulse-impacts: (i) the extent of the two-phase liquid–solid region increases with increments in welding temperature; (ii) the internal stresses at the interface are released, resulting in welded joints with a higher strength; (iii) the density of dislocations near to and away from the interface in the matrix are higher than in the parent composite, and the dislocations entangle extensively; (iv) nano-grains form which appear to improve the properties of the welded joints. This paper is part of a thematic issue on Light Alloys.

Research Area(s)

  • aluminium matrix composite, liquid-phase pulse-impact diffusion welding, particle reinforcement, Pulse-impact, SiCp/Al-6061