Abstract
Using the calculation of phase diagrams approach and Scheil solidification modeling, the Al-2.5Mg-1.0Ni-0.4Sc-0.1Zr alloy was designed, intentionally with an extraordinarily high cracking susceptibility, making it prime for solidification cracking during laser powder bed fusion. This study demonstrates the ability to mitigate even the most extreme solidification cracking tendencies in aluminum alloys with only minor alloying additions of Sc and Zr, 0.5 wt.% max. Furthermore, by employing a simple direct ageing heat treatment, good tensile mechanical properties were observed with a yield strength of 308 MPa, an ultimate tensile strength of 390 MPa, and a total elongation of 11%.
| Original language | English |
|---|---|
| Pages (from-to) | 50-58 |
| Number of pages | 9 |
| Journal | Journal of Materials Science and Technology |
| Volume | 103 |
| DOIs | |
| State | Published - Mar 20 2022 |
Funding
The work was sponsored by the Office of Naval Research under the ONR (No. Award # N00014-17-1-2559). The authors would like to thank the materials characterization facility (MCF) at UCF for their microscopy facility and the materials research facility (MRF) at UNT for assistance with EBSD. The raw/processed data required to reproduce these findings cannot be shared at this time as the data also forms part of an ongoing study. The work was sponsored by the Office of Naval Research under the ONR (No. Award # N00014-17-1-2559 ). The authors would like to thank the materials characterization facility (MCF) at UCF for their microscopy facility and the materials research facility (MRF) at UNT for assistance with EBSD.
Keywords
- Additive manufacturing
- Aluminum alloy
- CALPHAD
- Cracking susceptibility
- Mechanical properties
Fingerprint
Dive into the research topics of 'Elimination of extraordinarily high cracking susceptibility of aluminum alloy fabricated by laser powder bed fusion'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver