Mechanical characterization of induction sintered 316l stainless steel materials

In this study, the mechanical characterization of AISI 316L stainless steel samples sintered by induction is thoroughly discussed. The sintering process was implemented at 1100℃ and 1200℃. The effects on the relative density ratio, porosity percentage, impact strength, wear test, and microstructural properties of the sintered samples were examined. The obtained density and porosity results showed that the sintering temperature has a significant impact on density and porosity. It was determined that the density of the samples sintered at 1200℃ was higher, and the porosity was lower. This indicates that a higher temperature makes the sintering process more effective, thus creating a denser structure. The impact test results showed that as the sintering temperature increased, the impact resistance decreased. However, the fracture energy of the sample sintered at 1100°C was higher. When the SEM images of the impact tests were analyzed, it was found that the samples sintered at 1100°C showed ductile fracture, while those sintered at 1200°C displayed regional brittle fracture. Furthermore, from the wear tests, it was found that the sample sintered at 1100°C experienced more mass loss and more spalling was observed when SEM images were analyzed. On the other hand, the sample sintered at 1200°C experienced less mass loss and less spalling was observed in the SEM images.