|About this Abstract
||Materials Science & Technology 2019
||Additive Manufacturing of Metals: Microstructure and Material Properties of Nickel-based Alloys
||Corrosion Studies on Inconel 718 Produced by Laser Powder Bed Manufacturing
||Mythreyi O.V, Raja A, Nagesh B.K, Jayaganthan R
|On-Site Speaker (Planned)
IN 718 grade exhibits excellent creep, fatigue, and corrosion resistance and used for fabricating turbine and compressor parts. The literature on corrosion behavior of IN718 fabricated through additive manufacturing is scarce. The present work is focused to study influence of the microstructures of IN 718, during L-PBF , to the corrosion behavior under aggressive aqueous environment. Test samples were fabricated using EOS M 280 DMLS printer and subjected to room temperature corrosion in aqueous medium (3.5% NaCl) using electrochemical technique (potentiostat).The microstructure, hardness and tensile strength of as fabricated samples were characterized prior to the corrosion tests. The corrosion rates of the samples were calculated using Tafel polarisaion curves and impedance data obtained using electrochemical technique. The corroded samples were characterized using XRD, SEM and optical microscopy to elucidate the corrosion mechanisms of the alloy. The corrosion resistance of additively fabricated IN-718 is compared with cast samples.
||Planned: At-meeting proceedings