Investigation of the effect of ni-based additives on matrix properties

Powder Metallurgy (TM) that has started to spread more and more day by day is very widely used in today's industry. The products produced with TM are preferred by many industries due to their advantages such as needing less number of operation steps in their processes and relatively lower costs. The development of different sintering technologies in recent years are widespreading the use areas of powder metallurgy and increasing the number of powder metallurgy products we use today. It has been the preferred method in the production of machine parts, composite materials, surgical implants and cutting tools, high-tech materials and many other different products. In addition, depending on the development of CAD and CAM systems in reverse engineering applications, it is reached the target product directly in a short time and is less or no needed for traditional manufacturing methods, thus it is now possible to avoid high-budget production park and human error factor. Since additive manufacturing technology is more popular in the world and in our country, it is obvious that powder metallurgy methods and techniques will affect human life more. In addition to the development of machine production methods and techniques, the development of powders used as raw materials continues as chemical, mechanical, formal and methodological, too. The mechanical, physical and chemical properties of the selected raw material are the key factors that significantly affect the product quality and use, as well as the selection of the TM manufacturing method according to the sample to be manufactured. The type and class of raw material used in TM product manufacturing is the most important factor affecting the unit cost. Cobalt (Co), in terms of its mechanical properties, is one of the most effective products in TM processes and in the manufacture of many high technology products (battery, magnet, cutting tool, etc.). Many companies are working on the development of alternative products that can be used instead of Co. In this study, the effects of using two Nickel (Ni) based commercial powder materials, which can be mechanical alternatives to Co, on the mechanical and microstructural properties of the matrix was investigated. According to all the results from the experimental works, it was concluded that the commercial Ni-based additives named 9062 and 9045 increased the hardness and fracture strength by improving the mechanical properties. Thus, it is thought that the Ni-based alloy powders used as additives in this work can be used as alternative to Co. Keywords: Fe based matrix, powder metallurgy, hot pressing, superalloys