| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
|
| Presentation Title |
A-48: Mechanical Behavior of Additively Manufactured GRCop-84 Copper Alloy Lattice Structures |
| Author(s) |
Daniel A. June, Behzad Babamiri, Kavan Hazeli |
| On-Site Speaker (Planned) |
Daniel A. June |
| Abstract Scope |
This study investigates the relationship between microstructure, topology, and their combined effect on the quasi-static and dynamic behavior of additively manufactured Copper-Chromium-Niobium (GrCop-84) lattice structures. To determine whether topology was the only driving mechanism influencing mechanical properties e.g., yield strength, the as-built (AB) microstructure was altered through hot isostatic pressing (HIP) heat treatment while the sample topology was kept constant. Quasi-static and dynamic compression data showed the deformation process is independent of the relative density. It was found irrespective of the topology and unit cell size the post yielding of the AB samples was followed by a sudden load drop that coincides with either structural shear band formation or local instability causing sudden layer collapse. We also discuss how deformation mechanisms switch between structural shear band formation to layer-by-layer collapse triggered by strain localization depending on microstructure. The dependency of shear band formation on unit cell size is also discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Copper / Nickel / Cobalt, Other |