| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Additively Manufactured Alloys
|
| Presentation Title |
On the Heating Rate Dependent Oxide Formation and Evolution on Laser-based Directed Energy Additively Deposited IN718 |
| Author(s) |
Sangram Mazumder, Mangesh V. Pantawane, Narendra B. Dahotre |
| On-Site Speaker (Planned) |
Sangram Mazumder |
| Abstract Scope |
Here, we report the effect of non-isothermal treatment in oxygen containing air using a range of heating rates (10, 50 and 1000 ℃/min) until 1000 ℃ and furnace cooled to room temperature on the formation of oxide products on laser-based directed energy additively deposited superalloy Inconel 718 (IN718). The oxidation behavior was compared to another set of samples heated to 1000 ℃ using same heating rates and were isothermally held at 1000 ℃ for 1h and furnace cooled to room temperature. The oxide products were identified using X-ray photoelectron spectroscopy. Non-isothermally treated samples indicated the presence of NiO in samples heated at 1000 ℃/min and its absence at samples heated at the10 and 50 ℃/min. Also, results indicated absence of Fe oxides on non-isothermally treated samples heated using all three heating rates. However, the isothermally treated sample confirmed presence of NiO on samples only heated using 50 and 1000 ℃/min. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Copper / Nickel / Cobalt, Environmental Effects |