| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
|
| Presentation Title |
A Multiscale Study of the Interconnection between Unit Cell Design, Processing Conditions, Microstructure, and Mechanical Properties of Additively Manufactured Titanium Metamaterials |
| Author(s) |
Massimiliano Casata, Conrado Garrido, Toby Wilkinson, Enrique Alabort, Daniel Barba |
| On-Site Speaker (Planned) |
Massimiliano Casata |
| Abstract Scope |
Metallic architected metamaterials are a class of materials that combine properties of bulk alloys with tailored latticed geometries. The variety of characteristic sizes and orientations of the elementals forming these kinds of materials is vast. When produced by additive manufacturing (AM), this is an acute problematic as the mechanical properties of AM alloys depend strongly on the size and orientation of the printed geometry due to processing and microstructural variations. In this work, this problem is tackled by a systematic multiscale approach of the metamaterial design – microstructure – mechanical properties’ interconnection. Titanium alloys processed by selective laser melting are used as base material. Rationalization by means of combined experimentation and simulations of low-scale elemental beam behavior ranging from 400 microns to mms including orientation and size effects provide a physical explanation for the macro-scale behavior of architected metamaterials. Microstructure, roughness, and defects are connected with the metamaterial design. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Titanium, Mechanical Properties |