Phase Evolution and Mechanical Behavior of a Novel Ti–6.3Cu–2.2Fe−2.1Al Alloy Processed by Wire-Arc Directed Energy Deposition
Abstract Lacking Ti-alloy wires tailored for wire-arc directed energy deposition (waDED) restricts AM-component implementation. Ti–Cu alloys show potential but require additional elements to enhance performance. In this work, waDED-processed Ti–6.3Cu–2.2Fe−2.1Al is characterized. Addition of Cu to Ti achieves a columnar-to-equiaxed transition. The microstructure consists of fine Ti 2 Cu precipitates, β matrix, and α plates, with varying morphologies along the deposit’s height due to differing thermal histories. The as-built sample exhibits a σ Y of 1039 MPa but low ductility.
Authors
- Mark Easton (ORCID: https://orcid.org/0000-0002-9377-9572)
- Martin Schmitz‐Niederau
- Duyao Zhang (ORCID: https://orcid.org/0000-0002-3437-8795)
- Thomas Klein (ORCID: https://orcid.org/0000-0002-3749-496X)
- Christian Edtmaier (ORCID: https://orcid.org/0000-0003-4046-6457)
- Jelena Horky
- Ella Staufer
- Martin Klein (ORCID: https://orcid.org/0009-0009-1265-649X)
- Dong Qiu (ORCID: https://orcid.org/0000-0001-6320-0913)
Institutions
- AIT Austrian Institute of Technology GmbH (AT)
- TU Wien (AT)
- Voestalpine (Germany) (DE)
- RHP Technology (Austria) (AT)
- RMIT University (AU)
Publication Details
- Journal
- Metallurgical and Materials Transactions A
- Published
- 2025-04-15
- DOI
- https://doi.org/10.1007/s11661-025-07766-9
- Citations
- 2
- Primary Topic
- Additive Manufacturing Materials and Processes
- Type
- article
- Field-Weighted Citation Impact
- 1.43
Funders
- Bundesministerium für Klimaschutz, Umwelt, Energie, Mobilität, Innovation und Technologie
- Austrian Institute of Technology