About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Mechanical Behavior of Nuclear Reactor Materials and Components III
|
Presentation Title |
O-9: Hyper-localized Strengthening of Inconel 617 for Very High Temperature Reactor Applications |
Author(s) |
Noah Holtham, Keivan Davami |
On-Site Speaker (Planned) |
Noah Holtham |
Abstract Scope |
In this work, Inconel 617 (IN617), a choice material for next-gen nuclear reactors, was treated with a surface hardening technique known as laser peening (LP) which has been shown to aid in the wear resistance of IN617. However, the work-hardening effects induced through LP tend to decay significantly under thermal loading. For this reason, IN617 samples were given an aging treatment at 650 °C following LP to encourage heterogeneous precipitation at LP-induced defect sites and consequently enhance thermal stability. The size, orientation, and distribution of these precipitates were investigated via scanning and transmission electron microscopy. Metal carbides as well as nanoscale γ’ particles were dispersed throughout the LP-affected zone. Multi-cycle nanoindentation fatigue tests showed that the modified LP treatment increased resistance to localized time-dependent deformation. Results strongly suggest that the modified LP approach described here shows great promise for enhancing the structural integrity of next-generation nuclear reactor components. |
Proceedings Inclusion? |
Planned: |
Keywords |
Surface Modification and Coatings, Characterization, Copper / Nickel / Cobalt |