Abstract
The microstructural evolution, deformation modes, and fracture mechanisms of zirconium plate produced using ultrasonic additive manufacturing (UAM) are presented. In addition to conventional tensile testing techniques, digital image correlation captured highly variable strain accumulation in specimens loaded perpendicular or parallel to the build height (Z). When tested in parallel to Z, delamination at prior foil/foil interfaces creates strain localization noticeable in strain rate maps, whereas specimens loaded perpendicular to Z illustrate conventional strain hardening until necking accelerates delamination. Although bond strengths are statistically and spatially variable, in situ electron backscattering diffraction tests illustrate the ability for grains near interfaces to accommodate strain with twinning and slip modes consistent with conventionally produced zirconium alloys. Finally, mixtures of ductile and delamination-induced fracture highlight the interface-driven failure modes of UAM zirconium plate in the as-built condition. Graphic abstract: [Figure not available: see fulltext.]
| Original language | English |
|---|---|
| Pages (from-to) | 236-246 |
| Number of pages | 11 |
| Journal | Journal of Materials Research |
| Volume | 37 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 14 2022 |
Funding
This manuscript was authored by UT-Battelle LLC under Contract No. DE-AC05-00OR22725 with the US Department of Energy (DOE) and is based upon work supported by the DOE National Nuclear Security Administration, Office of Defense Nuclear nonproliferation Research and Development. The authors acknowledge the aid of Mark Norfolk and Adam Hehr at Fabrisonic LLC for their assistance with the UAM builds. This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ).
| Funders | Funder number |
|---|---|
| Office of Defense Nuclear Nonproliferation Research and Development | |
| U.S. Department of Energy | |
| National Nuclear Security Administration | |
| UT-Battelle | DE-AC05-00OR22725 |
Keywords
- Additive manufacturing
- Digital image correlation
- Electron backscatter diffraction
- Microstructure
- Scanning electron microscopy
- Zr
