An Experimental Investigation on Effect of Volume Energy Density for Selective Laser Melted Inconel718
Karia M.C1, Popat M.A2, Sangani K.B3

1Karia M. C, Research Scholar, Mechanical Engineering Department, Rai University, Saroda, Ahmedabad (Gujarat), India.
2Popat M.A, Principal, Kalol Institute of Technology, Kalol (Gujarat), India.
3Sangani K.B, Head of Mechanical Engineering, Sanjaybhai Rajguru College of Engineering, Rajkot (Gujarat), India.

Manuscript received on 01 May 2019 | Revised Manuscript received on 15 May 2019 | Manuscript published on 30 May 2019 | PP: 1262-1270 | Volume-8 Issue-7, May 2019 | Retrieval Number: F3410048619/19©BEIESP
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Abstract: Selective laser melting (SLM) is one of the most propitious powder bed process, ancestor of additive manufacturing (AM) group of technologies capable of manufacturing full functional metal components. Owing to superior properties like strength at high temperature conditions, corrosion resistance, weldability made Inconel718 acceptable material for high temperature applications. Experimental study is presented to investigate the influence of volume energy density on microstructure evolution, defect formation mechanisms, surface and mechanical properties and effects of post process aging treatment on selective laser melted Inconel718. Specimens were fabricated with applied range of energy density between 38.5 J/mm3 to 114 J/mm3. Various set of combinations of laser power, scanning speed, and layer thickness with constant beam diameter and hatch spacing are used. The responses for surface roughness, porosity, hardness were measured. The microstructures and surface morphology were characterized by using scanning electron microscopy (SEM) and optical microscopy.
Keyword: Energy Density, Inconel718, Microstructure, Selective Laser Melting.
Scope of the Article: Economics of Energy Harvesting Communications.