| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Processing, Microstructure and Material Properties of Titanium-based Materials
|
| Presentation Title |
Melt Pool Characterization and Numerical Simulation in Selective Laser Melting of NiTi Powder |
| Author(s) |
Stanislav Chernyshikhin, Igor Shishkovsky |
| On-Site Speaker (Planned) |
Stanislav Chernyshikhin |
| Abstract Scope |
Among the titanium-based materials, the intermetallic NiTi is attracting much attention due to the shape memory or superelasticity effects. The biocompatibility of this material allows utilizing in patient-specific implants which can be produced by Selective Laser Melting. In the relevant papers, there are contradicting condition parameters to obtain near-dense nitinol parts. This research aims to study the melt pool of the NiTi during the SLM process. The results will be useful for optimizing SLM condition parameters, for more accurate prediction of the final geometric dimensions in lattices with thin struts, and the understanding of the printing parameters' influence on the melt pool.
Single tracks of the nitinol powder were printed using Trumpf Tru Print 1000. Selected laser power and scanning speed cover the most combinations reported in the literature. A numerical model was established using OpenFOAM software. Microhardness tests were performed directly on the cross-sections of the single tracks. |