| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Tackling Structural Materials Challenges for Advanced Nuclear Reactors
|
| Presentation Title |
Phase Field Modeling of Hot Isostatic Pressing for Joining of Dissimilar Metals |
| Author(s) |
Albert C. Lin, Yongfeng Zhang |
| On-Site Speaker (Planned) |
Albert C. Lin |
| Abstract Scope |
Powder metallurgy hot isostatic pressing (PM-HIP) is a joining technique proven to manufacture structural and pressure-bearing reactor components with properties matching or exceeding those created by traditional methods. Here, a phase field model is constructed in the open-source MOOSE framework to simulate the interdiffusion between Fe- and Ni-based alloys during PM-HIP. The CALPAD free energy models of the Fe-Cr-Ni ternary system for the ferritic and austenitic phases of steel, in conjunction with mobilities of alloying elements, are used to describe and predict the interdiffusion and phase evolution in the interdiffusion zone. The model is applied to interdiffusion between 316 austenitic/A508 ferritic steels and between 316 steel/Ni-based 600M alloys to demonstrate the capabilities for concurrent diffusion and phase transformation. The generality of the MOOSE framework and the thermodynamic basis leave the model open to additional modeling of carbide phases, thermal cycling, and other critical issues of dissimilar metal joining. |