About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Tackling Metallic Structural Materials Challenges for Advanced Nuclear Reactors
|
| Presentation Title |
An Investigation of Post Heat-Treatment on the 316H Stainless Steel Fabricated by Laser Powder Bed Fusion |
| Author(s) |
Lin Gao, Srinivas Aditya Mantri, Xuan Zhang |
| On-Site Speaker (Planned) |
Lin Gao |
| Abstract Scope |
Additive manufacturing presents new opportunities for the nuclear industry to manufacture reactor components. However, as-built materials typically present significant residual stress and microstructure heterogeneity due to the special thermal history in AM processing. Thus, post-treatments are required to uniform microstructure and enhance properties of as-built components. 316H stainless steel is a material widely used in the nuclear industry because of its excellent corrosion resistance and high-temperature performance. In our work, we studied the microstructure evolution during the solution annealing of a 316H stainless steel fabricated using laser powder bed fusion at Argonne National Laboratory. In-situ high-energy synchrotron X-ray characterization techniques, including small-angle and wide-angle x-ray scattering, have been applied to study the kinetics of both dislocation recovery and the generation of secondary particles during the heat treatment. The effect of solution annealing on the mechanical properties, including tension and creep, of the AM 316H sample has been investigated. |