Microstructure evolution induced by the intrinsic heat treatment occurring during wire-arc additive manufacturing of an Al-Mg-Zn-Cu crossover alloy
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Authors
Organisational units
External Organisational units
- LKR Leichtmetallkompetenzzentrum Ranshofen GmbH
- Institute of Coastal Research
Abstract
The implementation of wire-arc additive manufacturing for fabricating complex structures requires detailed knowledge of process-structure-property relationships. Results of scanning electron microscopy, wide-angle X-ray scattering, small-angle X-ray scattering, and microhardness measurements are presented to identify the mechanisms that govern the microstructure formation of an Al-Mg-Zn-Cu crossover alloy during wire-arc additive manufacturing. These analyses provide evidence on the formation of Mg-, Zn- and Cu-rich phases on different length scales spanning from ~10 µm (microsegregations), down to a few nm (bulk) following the intrinsic heat treatment. Future alloy concepts should build on the presented findings.
Details
Original language | English |
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Article number | 130500 |
Number of pages | 4 |
Journal | Materials letters |
Volume | 303.2021 |
Issue number | 15 November |
Early online date | 19 Jul 2021 |
DOIs | |
Publication status | Published - 15 Nov 2021 |