Abstract
In this paper, it was aimed to improve the microstructure, mechanical and tribological properties of composite samples according to the alloy by adding 0.25%, 0.5% and 1% nano B4C to NiTi shape memory alloy. A 3D ball mixer device was used to prepare composite powders and the samples were produced by Spark Plasma Sintering technique. FE-SEM/EDS and XRD were used for microstructure and phase characterization, nanoindentation to determine mechanical properties, and pin-on disc wear device to determine wear properties. It was determined that with the increase in the reinforcement ratio added to the NiTi alloy, nB4C ceramic particles settled at the grain boundaries and the hardness value of the 1% nB4C (334 HV) sample with the highest hardness increased significantly by 30% unreinforced NiTi alloy (264 HV).
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