Microstructure and Wear Properties of Laser-Cladded cBN/Ti $$_{3}$$ 3 Al on Pure Titanium

Optimization of Multi-Track Laser-Cladding Process of Titanium Alloy Based on RSM and NSGA-II Algorithm

“…However, the plough grooves on the surface of Specimen S2 are deep and large, and the abrasive wear is more serious on the surfaces of Specimens S2 and S18. Local plastic deformation occurred on the surfaces of Specimens S2 and S18, and some materials were shed as abrasive chips in the sliding process, thus forming adhesive wear, while the adhesions on the surface of Specimen S2 are greater in quantity and larger, and the adhesive wear is more serious [32]. The surface morphology of Specimens S2 and S18 after wear is shown in Figure 10.…”

“…However, the plough grooves on the surface of Specimen S2 are deep and large, and the abrasive wear is more serious on the surfaces of Specimens S2 and S18. Local plastic deformation occurred on the surfaces of Specimens S2 and S18, and some materials were shed as abrasive chips in the sliding process, thus forming adhesive wear, while the adhesions on the surface of Specimen S2 are greater in quantity and larger, and the adhesive wear is more serious [32]. Considering that the coating microstructure obtained at the powder-feeding speed of S2 and S18 is composed of a small amount of acicular martensite α′ phase, compared to the coating microstructure obtained at the condition of S18, there are a large number of spicle-like martensite α′ arranged in a herringbone pattern and the hardness of each phase of titanium alloy is α′ > α > β; thus, the hardness of Specimen S18 is the highest, its friction performance is the best, and the surface-wear profile is shallow [33].…”