|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location-Specific Processing-Microstructure-Property Relationships
||Characterization of Maraging Steel to Austenitic Stainless Steel Gradient Components Fabricated with Laser Deposition
||Ashley Reichardt, John Paul Borgonia, R. Peter Dillon, Bryan McEnerney, Andrew A. Shapiro, Peter Hosemann
|On-Site Speaker (Planned)
Laser deposition systems, when equipped with multiple powder feeders, enable layer-by-layer tailoring of composition within a single component. Using this technique, components which transition gradually between two dissimilar metals can be fabricated, thus reducing the stress concentrations and abrupt property changes typically associated with welding. Here we report on the results of additively manufacturing a functionally graded component transitioning from C300 precipitation-hardened maraging steel to 316L austenitic stainless steel in a series of 15 0.5mm-thick layers. Detailed microstructural characterization via SEM, EBSD, and EDS facilitate the mapping of grain morphology, phase, and element concentration along the composition gradient. Mechanical properties along the gradient are assessed with Vickers hardness and nanoindentation. The effects of hot isostatic pressing and age-hardening heat treatments on microstructure, mechanical properties, and observed fabrication defects such as porosity and solidification cracking are also explored.
||Planned: Supplemental Proceedings volume