Selective Laser Post-Treatment on Titanium Cold Spray Coatings

Rubino, Felice; Astarita, Antonello; Carlone, Pierpaolo; Genna, Silvio; Leone, Claudio; Memola Capece Minutolo, Fabrizio; Squillace, Antonino

doi:10.1080/10426914.2015.1037912

The aim of the present work is to investigate the feasibility and effects of a selective postdeposition laser treatment on titanium coatings. Commercially pure titanium grade 2 powders were deposited by means of a cold spray process on aluminum alloy AA2024-T3 sheets. The surface treatment of the coating was realized using a 220 W diode laser. The influence of heat input and dimensional features of coating layer and substrate was assessed by an experimental campaign conducted following a design of experiments approach. Optical and scanning electron microscopy analysis of the microstructure of the deposited and treated material as well as microhardness measurements showed the formation of a compact layer of titanium oxide on the coating surface and the preservation of the temper state of the aluminum substrate.

Titolo:	Selective Laser Post-Treatment on Titanium Cold Spray Coatings
Autori:	RUBINO, FELICE Astarita, Antonello CARLONE, Pierpaolo Genna, Silvio Leone, Claudio Memola Capece Minutolo, Fabrizio Squillace, Antonino mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2016
Rivista:	MATERIALS AND MANUFACTURING PROCESSES
Abstract:	The aim of the present work is to investigate the feasibility and effects of a selective postdeposition laser treatment on titanium coatings. Commercially pure titanium grade 2 powders were deposited by means of a cold spray process on aluminum alloy AA2024-T3 sheets. The surface treatment of the coating was realized using a 220 W diode laser. The influence of heat input and dimensional features of coating layer and substrate was assessed by an experimental campaign conducted following a design of experiments approach. Optical and scanning electron microscopy analysis of the microstructure of the deposited and treated material as well as microhardness measurements showed the formation of a compact layer of titanium oxide on the coating surface and the preservation of the temper state of the aluminum substrate.
Handle:	http://hdl.handle.net/11386/4648530
Appare nelle tipologie:	1.1.2 Articolo su rivista con ISSN

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