|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Refractory Metallic Materials
||Additive Manufacturing of Refractory High Entropy Alloys
||Shahryar Mooraj, Xuesing Fan, George Kim, Wen Chen, Peter K. Liaw, Wei Chen
|On-Site Speaker (Planned)
Refractory high entropy alloys (RHEA) are known to be extremely difficult to process due to the high melting points of the constituent elements. Many RHEA systems can also include elements with vastly different melting points like Ti and Ta which can lead to large freezing range with significant chemical segregation. In this talk I will outline a laser additive manufacturing method to process TiTaZrNb alloy which shows superior mechanical properties to the as-cast counterpart. The printed alloy also shows more homogeneous elemental distribution, reducing the need for post-processing treatments like homogenization. I will also detail how we used synchrotron x-ray diffraction to explore the different mechanical behaviors of the 3D-printed and as-cast alloys, and the microstructural origin of such mechanical behavior difference.
||Additive Manufacturing, Mechanical Properties, Titanium