|About this Abstract
||2019 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Fatigue and Fracture III
||Sources of Scatter in the Fatigue Behavior of Ti-6Al-4V Fabricated via Electron Beam Melting
||Peeyush Nandwana, Sean Yoder, Vincent Paquit, Michael Kirka, Ercan Cakmak, Sudarsanam Babu, Ryan Dehoff
|On-Site Speaker (Planned)
Ti-6Al-4V is one of the most studied materials via electron beam melting (EBM) owing to its role as a key structural component in aerospace and biomedical industries. Though, there have been several studies on the impact of process parameters on microstructure and resulting material properties, there are limited studies on the role of powder feedstock on the development of porosity and subsequent high cycle fatigue (HCF) behavior or the role of microtexture zones (MTZs) on anisotropic HCF in EBM fabricated Ti-6Al-4V components. We present that the HCF behavior is sensitive to the powder feedstock, keeping all other process parameters constant. Furthermore, we discuss the use of in-situ near infrared images (NIR) as a viable tool to determine potential failure sites under fatigue loading and its limitations. Finally, the role of MTZs in anisotropic fatigue behavior will be discussed along with heat treatment schedules necessary to breakdown these MTZs.
||Planned: Supplemental Proceedings volume