About this Abstract |
Meeting |
MS&T21: Materials Science & Technology
|
Symposium
|
Advanced Materials for Harsh Environments
|
Presentation Title |
Oxidation Behavior of IN100 Superalloy between 840 - 1120 K |
Author(s) |
Sebastian Lech, Agnieszka Wusatowska-Sarnek, Adam Kruk |
On-Site Speaker (Planned) |
Agnieszka Wusatowska-Sarnek |
Abstract Scope |
The study was devoted to the characterization of the oxide scale and near-surface region formed in IN100 superalloy during oxidation at temperatures between 840-1120 K for 1000 hours. The SEM, SEM-EDXS, TEM, STEM-EDXS and XRD methods were combined to obtain detailed information about the microstructure, morphology, phase- and chemical composition of the investigated superalloy. The study revealed that at the lowest temperature of 840 K, thickness of the oxide scale formed after 1000 hours did not exceed 100-150 nm, while at the temperature of 1120 K it was roughly 5 µm thick. Furthermore, internal oxidation occurred and was the most prominent at the interphase boundaries of γ/γ’ phases and grain boundaries of γ/γ phase. Phase composition of the oxide scale changed upon applied temperature. Different combinations of MO2, M2O3 and M3O4 oxides were observed at different temperatures. |