About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing for Energy Applications V
|
Presentation Title |
Creep Behavior of an Additively Manufactured Al-Ce-Ni-Mn-Zr Alloy |
Author(s) |
Sumit Bahl, Richard A Michi, Jonathan D Poplawsky, Lawrence F Allard, Kevin Sisco, Ryan Dehoff, Alex Plotkowski, Amit Shyam |
On-Site Speaker (Planned) |
Sumit Bahl |
Abstract Scope |
Additive manufacturing has enabled the development of higher-temperature aluminum alloys for use in the 250 – 400 °C temperature range. A new Al-Ce-Ni-Mn-Zr alloy is designed and fabricated with laser powder bed fusion additive manufacturing. The as-fabricated alloy exhibits excellent creep resistance in the 300 – 400 °C temperature range. Aging the alloy precipitates nanoscale L12-Al3Zr particles which strengthen the alloy at ambient temperature. However, the alloy exhibits similar creep strain rates in the as-fabricated and peak-aged conditions indicating an unexpected lack of strengthening from nanoscale Al3Zr precipitates at elevated temperatures (300 – 400 °C). Informed by microstructural characterization performed using scanning transmission electron microscopy and atom probe tomography, this presentation will discuss creep deformation mechanisms in the Al-Ce-Ni-Mn-Zr alloy to help explain lack of strengthening from Al3Zr precipitates. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Aluminum, High-Temperature Materials |