| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Materials Design and Alloy Development V – Design Fundamentals
|
| Presentation Title |
Comparing Microstructure and Tensile Properties of Wrought and LP-DED Haynes 233: Effects of Heat Treatment and Test Temperature |
| Author(s) |
Mikyle Paul, Reza Ghiaasiaan, Paul R Gradl, Shuai Shao, Nima Shamsaei |
| On-Site Speaker (Planned) |
Mikyle Paul |
| Abstract Scope |
This study investigated and compared the microstructure and tensile properties of laser powder directed energy deposited (LP-DED) and wrought Haynes 233. Two heat-treatment (HT) conditions (i.e., solution annealed (SA) and age hardened (AH)) were considered. LP-DED cylindrical rods underwent stress-relieving and hot-isostatic-pressing prior to SA and/or AH. Standard tensile specimens were machined after HT and tested at room temperature and two elevated temperatures. The microstructural evolution during each stage of the HT was characterized using a scanning electron microscope. The dendritic microstructure observed in non-heat-treated LP-DED material was dissolved after HT, forming metal carbides at grain boundaries. Likely due to the abundant carbides formed, recrystallization or grain growth were not observed during HT. Similarly sized γ’ precipitates formed after aging in LP-DED and wrought materials. Tensile results indicated that the LP-DED material in the SA and AH condition was comparable to wrought in the AH condition at all test temperatures. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Mechanical Properties, |