Abstract
Fe-TiC composite coatings were produced on the surface of plain carbon steel by submerged arc cladding process. Mixtures of cast iron chips and ferrotitanium powder with different weight ratio between 1 and 6 were used as the alloying element sources. Cladding was performed by carbon‑manganese steel wire. Results showed that increase in the cast iron to ferrotitanium (CTF) weight ratio from 1 to 6 decreased the Ti wt% from 3.93 to 0.96 and increased the carbon concentration from 0.26 to 0.51 wt%. Titanium carbide reinforcing particles were detected in the microstructures of all coatings. Meanwhile, their size and volume fraction, as well as the microstructure of the matrix strongly was depending on the CTF weight ratio. The highest mean hardness value of 960 HV was obtained for the cladding produced by the CTF weight ratio of 6 with the TiC reinforced martensitic microstructure. Pin on disk wear test results showed that the hardest coating had the best wear resistance with the plowing and cutting wear mechanisms.
Published Version
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