| About this Abstract |
| Meeting |
2023 AWS Professional Program
|
| Symposium
|
2023 AWS Professional Program
|
| Presentation Title |
Precipitation Kinetics in Additively Manufactured Alloy K-500 and Commission IV Activities |
| Author(s) |
Patrick W. Hochanadel |
| On-Site Speaker (Planned) |
Patrick W. Hochanadel |
| Abstract Scope |
Introduction: Additive manufacturing (AM) is an area of continued growth. This work will outline the deposition and precipitation kinetics in AM Alloy K-500. In addition, the activities in IIW Commission IV (Power Beam Processes) will be discussed. Experimental: The DED-Powder laser AM process was used to manufacture K-500 specimens that underwent subsequent heat treatments. The heat treatments were performed in a heat treatment furnace and in a Gleeble thermomechanical simulator for shorter aging times. Microscopy showed that precipitation was evident during the AM builds. Wrought specimens were also tested for comparison. Hardness was used to track changes in precipitation. Results and Discussion: Compared to wrought K-500, the AM specimens exhibited different precipitation kinetics behavior likely due to the multiple thermal cycles involved. Microscopy showed that the precipitation in the AM builds occurred during the builds and precipitates were observed in the as-AM condition. The kinetics analysis showed that JMA kinetics should be used with caution. Summary: Precipitation in K-500 is different than in wrought material likely from the multiple thermal cycles experienced during the DED-powder process. Additionally, the IIW Commission IV activities are outlined. |
| Proceedings Inclusion? |
Undecided |