About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Lightweight Composites, Materials, and Alloys
|
| Presentation Title |
Microstructural Characterization of Low Cost High Strength Additively Manufactured Aluminum Alloys for Room and High Temperature Applications. |
| Author(s) |
Abrar Daiyan, Benjamin Glaser, S. Mohadeseh Taheri-Mousavi |
| On-Site Speaker (Planned) |
Abrar Daiyan |
| Abstract Scope |
Printable Al-alloys have high strength-to-density ratios and are in high demand for structural applications in automotive and aerospace industries. These alloys can be designed for room-temperature applications in housing and brackets, and at high-temperature in intake fans and pistons. We previously developed an additively manufactured Al-Zr-Y-Ni alloy using metastable ternary phases to achieve significant strengthening and room-temperature hardness of 235 HV. These phases transform into nanometer-scale L1<sub>2</sub> precipitates at elevated temperatures (400 <sup>o</sup>C) while hardness remained above 215 HV. In this study, we focus on microstructural characterization of these phases using Scanning and Transmission Electron Microscopy (SEM/TEM) to establish structure–property relationships governing mechanical performance. Moreover, we correlated phase evolution and distributions with hardness and tensile testing to develop a strengthening model that quantifies the contributions of each phase. These results link nanoscale phase evolution to macroscopic properties and support predictive design of high-performance Al-alloys across a wide temperature range. |