|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location-Specific Processing-Microstructure-Property Relationships
||Effect of Laser Scan Strategy on Microstructure-property Relations in Additively Manufactured Stainless Steel
||Brandon McWilliams, Jian Yu, Andrew Gaynor, Tomoko Sano, Andelle Kudzal
|On-Site Speaker (Planned)
The microstructure and properties of metallic components additively manufactured (AM) using powder bed fusion processes are dependent on a large number of process variables, including laser power, hatch spacing, and orientation on the build plate as examples. The scan strategy, or path that the laser follows, is often proprietary information of the printer manufacturer, and as such, is a less studied AM design consideration. In this work the effect of the laser scanning strategy on the resulting microstructure and mechanical properties of 17-4 stainless steel is studied. Compression and tension mechanical test specimens were printed and tested using a variety of laser path scan strategies, including unidirectional, bi-directional, and concentric. The crystallographic texture and grain size of these specimens were characterized using EBSD and SEM respectively.
||Planned: Supplemental Proceedings volume