| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Titanium-based Materials: Processing, Microstructure and Material Properties
|
| Presentation Title |
Role of Build Orientation and Layers on Microstructure and Multi-scale Mechanical Properties of Wire Arc Additive Manufactured Commercially Pure Titanium |
| Author(s) |
Tanaji Paul, Blanca Palacios, Tyler Dolmetsch, Cheng Zhang, Benjamin Boesl, Arvind Agarwal |
| On-Site Speaker (Planned) |
Tanaji Paul |
| Abstract Scope |
Wire arc additive manufacturing (WAAM) is a promising technology for manufacturing large scale structural components with complex geometries. However, a dearth of understanding of the dependence of their structure and mechanical performance on the build orientation and additive layers restricts WAAM of metallic structures. This paper presents a comprehensive understanding of the structure and mechanical properties in WAAM-ed commercially pure titanium in three mutually orthogonal build directions. A bimodal structure, with grain sizes in the range of 100 micrometer to 1.5 mm resulted in a microhardness of 166 HV, about 80% of cast titanium. Tensile strength was weakest in the normal direction due to residual heat from pre-solidified layers. These correlations of microstructure and multi-scale mechanical properties as a function of WAAM build routine is a significant advancement in the large-scale additive manufacturing of commercially pure titanium structural components. |