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Aluminium composites prepared by laser cladding assisted by friction stir processing

Journal Article · · Materials Research Express (Online)
Abstract

A laser cladding and friction stir processing hybrid method was employed to produce an Al matrix composite layer. The microstructure, phase composition, microhardness and conductivity of the composites were investigated. A laser cladding layer with a thickness of approximately 200 μ m was prepared on a 1060 aluminium plate and it was broken up and distributed on the Al matrix after friction stir processing. The particle/Al interfaces exhibited extremely good interfacial integrity. Microstructural observations revealed that an obvious in situ reaction occurred at the particle/Al interfaces, which effectively improved the bonding between the reinforcement phase and the matrix. TEM analysis and selected area diffraction enabled the identification of the intermetallic compounds and confirmed them to be Al 5 Fe 2 and Al 3 Fe. The average microhardness values of the friction stir processed composites reached approximately 85 HV. The electrical resistivity of the friction stir processed composites is slightly higher than that of the aluminium matrix.

Sponsoring Organization:
USDOE Office of Electricity (OE), Advanced Grid Research & Development. Power Systems Engineering Research
OSTI ID:
1724283
Alternate ID(s):
OSTI ID: 23060991
Journal Information:
Materials Research Express (Online), Journal Name: Materials Research Express (Online) Journal Issue: 11 Vol. 7; ISSN 2053-1591
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United Kingdom
Language:
English

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