Simulation of coarsening during laser engineered Net-Shaping
- Sandia National Labs., Albuquerque, NM (United States)
- Sandia National Labs., Livermore, CA (United States)
Laser Engineered Net-Shaping, otherwise known as LENS{trademark}, is an advanced manufacturing technique used to fabricate complex near net shaped components directly from engineered solid models without the use of dies or machining. The ultimate objective of this project is to develop predictive simulation capability which will allow the LENS{trademark} processors to determine fabrication conditions given the material, shape, and application of the final part. In this paper, the authors will present an incremental achievement to meeting the ultimate goal, a model capable of simulating the coarsening of microstructural features under the unique thermal history to which a LENS{trademark} part is subjected during processing. The simulation results show how grains of very different shapes and sizes form within the same deposition line. They also show that relatively minor changes in the dynamic temperature profile results in microstructures with vastly different characteristics. The implications of this work for LENS{trademark} fabrication is that controlling the temperature profile is essential to tailoring the microstructure of a component to its application.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE Office of Financial Management and Controller, Washington, DC (United States)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 539848
- Report Number(s):
- SAND-97-1943C; CONF-970888-; ON: DE97009386; TRN: 97:005543
- Resource Relation:
- Conference: 8. solid freeform fabrication conference, Austin, TX (United States), 11-13 Aug 1997; Other Information: PBD: 1997
- Country of Publication:
- United States
- Language:
- English
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