| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Mechanisms and Mitigation of Aqueous Corrosion and High-temperature Oxidation
|
| Presentation Title |
Assessing the Printability and Oxidation Resistance of AM Built AlxCoCrFeNi with Directed Energy Deposition |
| Author(s) |
Jose Loli, Bryan Webler, Maarten De Boer, Jack Beuth |
| On-Site Speaker (Planned) |
Jose Loli |
| Abstract Scope |
Directed energy deposition (DED) systems enable in-situ composition control by alloying multiple powders together in a melt pool. This capability can be used to study the variation in printability and material properties. In this work, we focus on the material system AlCoCrFeNi which is a high entropy alloy that has been successfully printed in powder bed and DED systems. On arc-melted samples, this alloy has been characterized and has demonstrated good high temperature oxidation resistance. The printability response of Alx(CoCrFeNi)1-x (where x = 8, 12, 15, 20) is studied in detail by exploring different process parameters with the Trumpf TruLaserCell 3000 system to minimize defect formation. Additionally, the high temperature oxidation behavior of these additively manufactured samples is evaluated. Determining how composition variation affects ideal printing parameters and material properties is important to fully characterize new alloys in additive manufacturing. Our approach also expands the capabilities towards new material discovery. |