About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder-Based Manufacturing and Repair of Large Structural Components for Critical Applications
|
| Presentation Title |
HIP Manufacturing of Large Dissimilar Metal Reactor Structures |
| Author(s) |
Xiaoyuan Lou, Evan McDermott, Chenglu Tang, Qianwen Zhang, Victor Samarov, Lorena Perez-Andrade, David Gandy |
| On-Site Speaker (Planned) |
Xiaoyuan Lou |
| Abstract Scope |
We present a comprehensive study to assess the feasibility of manufacturing large-size reactor pressure vessel (RPV) dissimilar metal structures using a combination of solid-state manufacturing, including powder-based hot isostatic pressing and cold spray. The mission is to simplify the dissimilar metal manufacturing that are traditionally made by complex arc-welding configuration and develop convergent manufacturing route to construct multi-material components. The study focused on two ASME code approved dissimilar material systems covering both light-water based nuclear reactors and advanced GEN IV reactor designs, including (1) SA508 ferritic low alloy steel and 316L austenitic stainless steel combination, and (2) Grade 91 ferritic-martensitic steel and 316H austenitic stainless steel. The talk will cover a wide range of topics regarding HIP joint configuration design, powder de-oxygen processing, heat treatment, and various cold spray routes. Two main metallurgical issues, intergranular carbide formation and prior particle boundary (PPB) oxides, that affect fracture toughness were thoroughly investigated. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Nuclear Materials, Joining |