SiC particle-reinforced aluminum matrix composites (SiC

p

/Al) demonstrate broad application prospects in lightweight and large-scale aerospace equipments due to their high specific strength

low density

and low coefficient of thermal expansion. However

defects such as the formation of the brittle Al

4

C

3

phase

porosity

and particle segregation readily occur during their fusion welding

severely restricting their engineering applications. Consequently

the demand for high-efficiency and reliable welding techniques is

becoming increasingly urgent. This paper systematically reviews the research status of laser welding for aerospace SiC

p

/Al from three aspects: conventional laser welding

external-fieldassisted laser welding

and laser welding with interlayers. Conventional laser welding (continuous

pulsed

or wobbling) can only optimize joint performance through process regulation

but cannot effectively suppress the formation of the brittle phase

and the process window remains narrow. External energy field assistance (arc

magnetic field

or ultrasonic) laser welding can effectively stabilize the molten pool

reduce macroscopic defects

and refine grains

yet it struggles to block the interfacial reaction. Interfacial reaction regulation laser welding

by introducing active elements to reconstruct the interfacial reaction path and transforming harmful phases into strengthening phases

has emerged as the key to achieving performance leaps. Finally

this review discusses the future research hotspots of the laser welding for SiC

p

/Al composites

aiming to provide a reference for the large-scale and reliable welding of this material in the aerospace field.