Investigation of the effects of boron powder addition on NiAl and Ni3Al alloys produced by SHS process

Nickel aluminum intermetallic compounds have been used in many sectors in recent years instead of conventional materials and have become technologically interesting due to their suitability at different operating conditions. Self-propagating high-temperature synthesis (SHS) is an advanced material manufacturing technique that is rapidly evolving and spreading. The biggest advantage of the process is that the continuous consumption of energy is not required for synthesis and therefore the operating cost is low. The aim of this study is to synthesize Ni3Al and NiAl intermetallic compounds by SHS method and to investigate the effects of boron addition at certain ratios. As a result of the investigations, it was determined that the boron addition reduced the porosity and decreased the strength of the samples after a certain amount. It has also been determined that boron addition reduces grain size and increases microhardness.