Batman Universitesi Yasam Bilimleri Dergisi
Cilt 5, Sayı 2  Temmuz-Aralık 2015  (ISSN: 2147-4877, E-ISSN: 2459-0614)

NO Makale Adı
1444223518 The Investigation of Microstructures and Fabrication of Functionally Graded Intermetallic Materials by Self-Propagating High-Temperature Synthesis

The aim of this study is to manufacture functionally graded Ni3Al/NiAl/NiTi material (FGM) using self-propagating high-temperature synthesis (SHS) method and examine the microstructure of produced materials. It is determined that FGMs were produced by using preheat temperatures 200-300-400 °C , 150 MPa compact pressure and different layer. The samples obtained after combustion synthesis were subjected to sintering at 1000 °C temperature. The microstructure analyses of samples were performed by optic microscopy, micro-hardness and X-ray. As a result of analyses, pores, burning halls and dendritic formations were observed. In the micro hardness analyses the highest hardness has been found at the intermediate zone of NiTi and NiTi-NiAl. In addition, the intermediate phase (TiAl3) was detected with the main phase (NiTi, NiAl and Ni3Al) in the X-ray analysis.
Keywords: SHS, functionally graded material, preheating, Intermetallics, NiTi-NiA