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Titanium alloys are used on aeronautical engine widely. In order to improve the surface properties of titanium alloy parts to meet the requirements of friction and wear properties, a functional graded cladding layer (Ti-FGCL) on Ti600 was successfully carried out by an experimental of laser multi-claddings.Powder mixture was pre-placed on samples and cladding layer, the main components of Ti, Ni, Al, and Cr3C2 were changed from the bottom layer to the top. A 4kw cw CO2 laser was used to clad every layer. SEM and EDAM were used to analyze microstructure and components of Ti-FGCL. A pin-disc wear experiment was used to check the wear property of the cladding layers.Experimental conclusions are as follows: A Ti-FGCL can be reached by laser multi-cladding, and no crack, poles, and obvious diseases in the layer. From bottom to top of the Ti-FGCL the components of Ti, Ni, Al are changed continuously. Dispersed ceramic phase of TiC can be obtained in the surface layer. The wear property of the surface layer of Ti-FGCL is 4 times than substrate materials (Ti600).Titanium alloys are used on aeronautical engine widely. In order to improve the surface properties of titanium alloy parts to meet the requirements of friction and wear properties, a functional graded cladding layer (Ti-FGCL) on Ti600 was successfully carried out by an experimental of laser multi-claddings.Powder mixture was pre-placed on samples and cladding layer, the main components of Ti, Ni, Al, and Cr3C2 were changed from the bottom layer to the top. A 4kw cw CO2 laser was used to clad every layer. SEM and EDAM were used to analyze microstructure and components of Ti-FGCL. A pin-disc wear experiment was used to check the wear property of the cladding layers.Experimental conclusions are as follows: A Ti-FGCL can be reached by laser multi-cladding, and no crack, poles, and obvious diseases in the layer. From bottom to top of the Ti-FGCL the components of Ti, Ni, Al are changed continuously. Dispersed ceramic phase of TiC can be obtained in the surface layer. The wear property of the surface layer of T... |
