| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Processing Effects on Microstructure and Material Performance
|
| Presentation Title |
A-90: Characterization and Integration of the Anisotropy of Additively Manufactured Titanium in the Topology Optimization of Light-weight Structures |
| Author(s) |
Matthew Vaughn, Justin Unger, Alberto Torres, Andrew Gaynor, Brandon A. McWilliams, James K. Guest, Kevin J. Hemker |
| On-Site Speaker (Planned) |
Matthew Vaughn |
| Abstract Scope |
Additive manufacturing (AM) creates an opportunity to produce geometries that were previously unachievable through conventional manufacturing techniques; although the relation between processing and part performance is not fully understood. Titanium alloys are desirable candidates for AM, but the Selective Laser Melt (SLM) process by which titanium alloys are typically additively manufactured consistently produces parts with anisotropic and location-specific tensile properties. Topology Optimization (TO) is an ideal complement to AM as it generates highly efficient designs that take advantage of AM’s ability to realize complex topologies. However, TO models typically assume homogeneous isotropic properties and thus need to be adapted to the AM process. This talk outlines the development and use of shear, compression and tensile tests that provide an understanding of the yield surface and stiffness anisotropy of AM Ti-6Al-4V. Through the investigation a tension-compression asymmetry was elucidated as well as a variance between in build plane and build direction properties. The location and size dependence of microstructure and strength will be discussed, as will efforts to integrate experimental and TO efforts. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |