About this Abstract |
| Meeting |
11th International Symposium on Superalloy 718 and Derivatives 2026: Legacy, Innovations, and Future Directions
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| Symposium
|
Superalloy 718 and Derivatives 2026: Legacy, Innovations, and Future Directions
|
| Presentation Title |
Hot extrusion characteristics and microstructure-based hot extrusion control principle of alloy 617B tube |
| Author(s) |
He Jiang, Jianxin Dong, Maicang Zhang |
| On-Site Speaker (Planned) |
He Jiang |
| Abstract Scope |
Alloy 617B is a nickel-base superalloy used as tubes and pipes in ultra- supercritical (A-USC) power plants and nuclear system. High alloying degree of the alloy results in difficulties in microstructure control during manufacture, especially hot extrusion process. Microstructure evolution model during hot deformation of alloy 617B is established in this work. The microstructure evolution model is coupled with DEFORM-2D finite element simulation software by secondary development to enable microstructure prediction during hot extrusion. A series of hot extrusion control principle are proposed based on characterization of alloy 617B and extrusion equipment. The manufacture parameters of hot extrusion can be optimized by the control principle based on finite element simulation results. Alloy 617B tube was hot extruded successfully without apparent drawbacks under the guidance of optimized hot extrusion parameter. The simulated microstructure agrees well with the actual manufactured one, demonstrating that the models and simulation method proposed in present study can used for microstructure prediction and optimization for alloy 617B during hot deformation. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |