Development of reinforced TiN-SS316 metal matrix composite (MMC) using direct Metal laser sintering (DMLS) and its characterization
2017; Elsevier BV; Volume: 4; Issue: 9 Linguagem: Inglês
10.1016/j.matpr.2017.06.306
ISSN2214-7853
AutoresVijay Mandal, Manowar Hussain, Vikas Kumar, Alok Kumar Das, Nishant Kumar Singh,
Tópico(s)Aluminum Alloys Composites Properties
ResumoIn the present work, formation of reinforced TiN -SS316 metal matrix composites using fiber laser sintering through DMLS process were studied. Different laser input parameters, for example, laser power (50-65W), scanning speed 4000 mm/min, spot diameter 0.4 mm, layer thickness (0.4mm), and hatching distance (0.2 mm) were taken to conduct experiments under nitrogen atmosphere. The sintered materials were investigated in term of microstructure, density, porosity, micro-hardness and wear behavior. The sintered metal matrix composites (MMCs) were subjected to Field Emission Scanning Electron Microscope (FE-SEM) and X-ray diffraction (XRD) test for microstructural and phase analysis respectively. The experimental results showed that the density of the sintered MMCs increases with increase in laser power, but decreases with increasing the reinforcement (TiN) content. It has also been observed that the developed MMCs showed that the wear resistance and hardness increased with TiN. It was found that the TiN and SS316 particles establish good metallurgical bond during the sintering process showing compatibility of matrix and reinforcement under nitrogen atmosphere. The experimental results demonstrate suitability of TiN-SS316 based MMCs for some engineering applications.
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