A study on wear resistance and microcrack of the Ti3Al/TiAl + TiC ceramic layer deposited by laser cladding on Ti–6Al–4V alloy

Phase constituents and microstructure of laser cladding Al2O3/Ti3Al reinforced ceramic layer on titanium alloy

“…Thus, it can be deduced that the dilution rate of Ti-6Al-4V alloy to coating of sample 1 was higher than that of sample 2. Therefore, after laser cladding, the freezing time of the molten pool of sample 2 was shorter than that of sample 1, which led the steam not have enough time to escape and the pores were formed in coating [10]. On the other hand, because of the short freezing time of molten pool, the TiB 2 powder in coating of sample 2 cannot melt completely and un-melted TiB 2 block was retained in coating of sample 2 (see Fig.…”

MICROSTRUCTURES AND DRY SLIDING WEAR RESISTANCE OF THE LASER CERAMICS COMPOSITE COATING ON PURE Ti

“…And the bottom of the coating was nearest to the substrate, so the Ti density was the largest in this location, which was favorable to the productions of TiB. 7,8 The SEM micrograph also revealed that the faceted hexagonal platelet TiB 2 precipitates were present in the coating. It was well established that the molten pool generated during the laser cladding undergoes a high rate of the cooling.…”

“…Moreover, TiÀCo and TiÀAl intermetallics also played an important role in improving the tribological properties of the laser-cladded coating. 8,10 Thus, the composite coating showed better wear resistance than that of the substrate.…”

Microstructural evolution and wear behaviors of laser cladding Ti 2 Ni/α(Ti) dual-phase coating reinforced by TiB and TiC

“…Titanium and its alloys are extensively used in aerospace, marine and chemical industries owing to their intrinsic properties such as high specific strength, excellent corrosion and oxidation resistance [1][2][3]. However, because of their low hardness and poor tribological properties, the application of titanium alloys is severely restricted under severe wear and friction conditions [4][5][6].…”