| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior of Nuclear Reactor Materials and Components IV
|
| Presentation Title |
A Solid Mechanics Evaluation of Distortion in Laser Arc Hybrid Welding for Thick Walled Pressure Vessels: Process Validation and Metallurgical Characteristics |
| Author(s) |
Dominic Piccone, Elizabeth Smith, Edmundo Corona, Jeffrey Rodelas, Christopher Finfrock |
| On-Site Speaker (Planned) |
Dominic Piccone |
| Abstract Scope |
In the energy generation industry, arc welding is the primary method for joining thick-walled steel sections. However, narrow gap laser welding(NGLW) has emerged as an economical alternative. NGLW offers increased welding speeds, reduced heat input, and minimized residual stress and distortion, while consuming less filler material and power. Hybrid Laser Arc Welding (HLAW), a combination of GMAW and laser welding is identified as a promising method for narrow gap welds with decreased distortion and a refined Heat-Affected Zone (HAZ). To assess HLAW efficacy, a solid mechanics model was combined with physical experimentation to predict distortion of multipass HLAW weldments on SA508 steel. Investigations into the weldment microstructures revealed a smaller HAZ compared to traditional GMAW processes. By integrating solid mechanics modeling with microstructural analysis, the complex thermomechanical process of HLAW is explored, accelerating further industrial implementation of HLAW.
SNL managed and operated by NTESS under DOE NNSA contract DE-NA0003525 |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Joining, Mechanical Properties |