Formation of wear resistant AI-SiC surface composite by laser melt-particle injection process

 
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1995 (EN)
Formation of wear resistant AI-SiC surface composite by laser melt-particle injection process (EN)

Pantelis, D (EN)
Manolatos, P (EN)
Ponthiaux, P (EN)
Tissandier, A (EN)

N/A (EN)

The microstructural and mechanical properties (hardness and wear resistance) of the metal-SiC composite formed on the surface of the cast Al alloy A-S7G0.3 by SiC particle injection assisted laser treatment were studied. The upper part of the laser treated zone had a very fine microstructure, characterised by needles of various sizes and high microhardness values (250 HV (30 g)) compared with that of the substrate (60 HV (30 g)). The SiC particles had partially reacted with the matrix. In the lower part of the zone, the SiC particles remained completely unreacted and had only mechanical adhesion with the matrix. Wear tests revealed that extremely high wear resistance (90 times higher than that of the untreated surface) was provided by this laser surface treatment technique when a load of 35 N was applied. © 1995 The Institute of Materials. (EN)

journalArticle

Injection process (EN)
Wear test (EN)
Cast Al-alloys (EN)
Laser treated (EN)
Wear resistant (EN)
Laser surface treatment (EN)
SiC particles (EN)
matrix (EN)
Adhesion (EN)
Surface treatment (EN)
Surface composites (EN)
Silicon carbide (EN)
Mechanical adhesion (EN)
High wear resistance (EN)
Micro-structural (EN)
Particle injectors (EN)
Fine microstructure (EN)
Wear resistance (EN)
Laser treatment (EN)

Εθνικό Μετσόβιο Πολυτεχνείο (EL)
National Technical University of Athens (EN)

Materials Science and Technology (EN)

English

1995


INST MATERIALS (EN)



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