|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location-Specific Processing-Microstructure-Property Relationships
||A-1: A Study of Multiple Interfaces in Stainless Steel 316L Components Fabricated by Laser Powder Injection Deposition
||Baolong Zheng, Nancy Yang, Joshua Yee, Thale Smith, James Haley, Yizhang Zhou, Enrique J. Lavernia, Julie Schoenung
|On-Site Speaker (Planned)
During direct fabrication of stainless steel (SS) 316L components by directed energy deposition (DED), an additive manufacturing (AM) technique, multiple interfaces were formed between subsequent tracks (inter-pass interfaces) and layers (inter-layer interfaces). Moreover, interfaces between the mesh-like cellular structures, as well as well-fused epitaxial interfaces, were also formed, due to directional solidification that follows the fast moving heat source of the laser beam. The microstructure and physical nature of these various types of interfaces can influence the mechanical behavior of laser deposited materials which was discussed earlier. In this study, laser deposition of SS316L components was carried out, with the formation of various interfaces. Furthermore, a comprehensive analysis of these multiple interfaces was performed using OM, SEM, EDS, EBSD and TEM. The objectives are to identify the physical nature of these interfaces and to provide an interpretation of their effects on the properties of AM deposited metals.
||Planned: Supplemental Proceedings volume