|About this Abstract
||Materials Science & Technology 2019
||Additive Manufacturing of Metals: Microstructure and Material Properties of Nickel-based Alloys
||Selective Laser Melting of Inconel 625 Superalloy with Enhanced Hardness
||Amir Dehghanghadikolaei, Kijoon Lee, Vinay Doddapaneni, Lucas Freiberg, Matthew Conlyn, Chih-hung Chang, Goran Jovanovic, Brian Paul, Somayeh Pasebani
|On-Site Speaker (Planned)
Selective Laser Melting (SLM) as one of the powder bed additive manufacturing processes utilized to build Inconel 625 components. SLM process was carried out at different volumetric energy densities (VED) ranging from 312.5 to 687.5 J/mm3. The SLMed Inconel 625 parts were characterized for relative density, microhardness and microstructure. A highest relative density of 99.67% and average microhardness 365 15 HV was obtained with a columnar microstructure. Single track deposition was done using same VED values at different laser power and scan speed followed by microstructural analysis. SLM single-track process was carried out in both nitrogen and argon environment, and the parts were compared against each other in terms of density, microhardness, and microstructure. Phase identification and grain orientation were determined using x-ray diffraction (XRD) and electron back scattered diffraction methods (EBSD). Inconel 625 was mixed with 0-20wt% W and SLMed. Microhardness of Inconel 625+W was significantly enhanced.
||Planned: At-meeting proceedings