Design for Additive Manufacturing: Exploring Remelt Strategies to Tailor Density and Microstructure
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
The potential advantages of AM (e.g. weight reduction, novel geometries) are well understood within a systems context. However, adoption of AM at the system level has been slow due to the relative uncertainty in the final material properties, which leaves capabilities and/or performance gains unrealized. Utilizing remelt strategies it may be possible to expand the available process window to provide densities and microstructures beyond what is capable with standard scan strategies. This work explored remelting strategies for 316L stainless steel to tailor grain size and increase density. Twelve scan strategies were explored experimentally and computationally to understand the limitations of remelt strategies and the robustness of the current simulation package. Results show tailoring of grain size, density, and texture is achievable through remelting and several key lessons learned were made to improve the texture evaluation through simulation.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Sandia National Lab. (SNL-CA), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); RDCS/Tech Maturation Portfolio
- DOE Contract Number:
- AC04-94AL85000; NA0003525
- OSTI ID:
- 1678840
- Report Number(s):
- SAND-2020-10945; 691521
- Country of Publication:
- United States
- Language:
- English
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