|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing Fatigue and Fracture: Developing Predictive Capabilities
||The Study on Microstructural Evolution during Post-processing of Additively Manufactured Ti64
||Bryan Naab, Denis Dowling, Mert Celikin
|On-Site Speaker (Planned)
The advent of additive manufacturing (AM) technologies such as selective laser melting (SLM) is creating a demand for new research into how AM post-processing, such as hot isostatic pressing (HIP) and heat treatment, influences the material properties and failure mechanisms of Ti-6Al-4V. The present study examines the relationships between microstructure, processing, static mechanical properties, impact toughness and fatigue crack growth behavior of Ti64 alloy produced by SLM. Furthermore, the effects of HIP and heat treatment on microstructural evolution on the fatigue crack growth behavior were investigated via interrupted fatigue tests and Transmission electron microscopy (TEM) analysis. A direct correlation between the tensile properties with microstructure was established, however the impact toughness was determined to be mainly controlled by the porosity content rather than the microstructure.
||Additive Manufacturing, Titanium, Mechanical Properties