The aim of the present work is to investigate the feasibility and effects of a selective post-deposition 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 micro hardness 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.
Selective Laser Post-Treatment on Titanium Cold Spray Coatings / Rubino, Felice; Astarita, Antonello; Carlone, P.; Genna, Silvio; Leone, Claudio; MEMOLA CAPECE MINUTOLO, Fabrizio; Squillace, Antonino. - In: MATERIALS AND MANUFACTURING PROCESSES. - ISSN 1042-6914. - 31:(2016), pp. 1500-1506. [10.1080/10426914.2015.1037912]
Selective Laser Post-Treatment on Titanium Cold Spray Coatings
ASTARITA, ANTONELLO;MEMOLA CAPECE MINUTOLO, FABRIZIO;SQUILLACE, ANTONINO
2016
Abstract
The aim of the present work is to investigate the feasibility and effects of a selective post-deposition 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 micro hardness 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.| File | Dimensione | Formato | |
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