|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Building the Pathway towards Process and Material Qualification
||Simulation and Experimental Validation of Thermal Cycling Motivated Distortion on Parts Produced Using Alloy IN 625 via Selective Laser Melting
||Deepankar Pal, Samuel Dilip Jangam, Nachiket Patil, Sally Xu, Pradeep Chalavadi, Kevin Briggs, Brent Stucker
|On-Site Speaker (Planned)
A variety of cantilever builds and their structural modifications have been fabricated using Inconel625 on an EOSM270 powder bed fusion machine at different laser power and speed combinations. It was found that slow scan speeds at high power leads to extraneous deformations of the magnitude of ‘a’ layer thickness in the +Z direction leading to blade crashes during layer spreading. In addition, the parts which survived blade crash events led to intermediate deformations with huge deviations with respect to their dimensional tolerances. To address these deformation anomalies, a microstructurally inclined thermal process model has been developed at 3DSIM where the cyclic thermal events were simulated and the shrinkage variations in and out of the build plane have been turned into 3 dimensional structural boundary conditions as inputs to the Structural solver. The simulated and experimentally measured deformation behavior was further compared and the goodness of match has been obtained.
||Planned: Supplemental Proceedings volume