Mechanical behavior of Fe/ TiC surface layer fabricated by SMAW process

In the present study, Al/TiC surface composites were prepared by SMAW process using FeTi and graphite powders as reactants. Electrical arc was used in order to start the formation of TiC particles into steel melt. The reactants ratio effect on microstructure, hardness and wear behavior was examined. Dry sand/rubber wheel abrasion test machine according to ASTM G65 was used to wear tests. Results showed that maximum size and volume fraction of TiC particles was obtained by 18/82 graphite/FeTi ratio. This specimens showed maximum hardness equal to 481 BHN. Also, results showed that wear behavior dependent on size and volume fraction of the reinforcement particles. Measurements showed that, the waste volume in the coated and non-coated specimens were 25 mm3 and 289mm3, respectively. In all samples, micro-cutting of the composite matrix were seen. It was revealed that surface composites obtained with 18/82 graphite/FeTi ratio had lower wear rates and bigger wear resistant.