WC Wear-resistant Layer on TC4 by High-frequency Induction Brazing

High-frequency induction brazing was applied to prepare WC wear-resistant layer on TC4. The effect of brazing process on the microstructure of the base metal was studied. And the wear-resistant layer's wear resistance with different percentage of WC was also studied. The results show that the brazability was better and the defects in the wear-resistant layer were less with the percentage of the filler metal in the mixture increasing. The wear resistance of the layer increased with the percentage of the WC in the mixture increasing. The times of the brazing circle affected the microstructure. The distance of the near affected zone (HAZ) of base metal was within 2 mm when the circle time of brazing process was one time. When the circle time was 2 or 3, the HAZ of the base metal was in about 3 mm.