| About this Abstract |
| Meeting |
10th International Symposium on Superalloy 718 and Derivatives (2023)
|
| Symposium
|
Superalloy 718 and Derivatives
|
| Presentation Title |
(LBN - P6) Exploring High Temperature Fretting Wear Behaviour in Wrought and Additively Manufactured DA-718 Superalloy |
| Author(s) |
Sathisha CH, Kesavan D, Sridhar MR, Arivu Y |
| On-Site Speaker (Planned) |
Sathisha CH |
| Abstract Scope |
The occurrence of fretting wear is due to the small oscillatory motion of two contacting surfaces under gross-contact pressure. Further, wear mechanisms are dependent on the material's response to these contact conditions. Elevated temperature plays a significant role in determining material performance and changes the wear regime. This research explores the fretting wear behaviour of DA-718 nickel-based superalloys made through both wrought and Laser Powder Bed Fusion (LPBF) additive manufacturing methods. Gross-slip fretting wear tests were conducted at constant high contact pressure and elevated temperature, and the wear behaviour of the two alloys was compared using a custom-built fretting test setup to simulate fretting wear. The results indicate that the additively manufactured DA-718 had similar wear behaviour to the wrought DA-718, but with a higher degree of variation attributed to microstructure-dependent wear phenomena. The microstructure of the alloys was also analyzed to understand the mechanisms governing wear behaviour. These findings have significant implications for the use of additively manufactured DA-718 in high-contact pressure and high-temperature applications, such as gas turbine engines. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |