| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Functional, Energy, and Magnetic Materials
|
| Presentation Title |
Toward Understanding the Effect of Selective Laser Re-melting on the Mechanical Properties of the SLM Fabricated Nitinol |
| Author(s) |
Parisa Bayati, Keyvan Safaei, Mohammadreza Nematollahi, Ahmadreza Jahadakbar, Mohammad Mahtabi, Mohammad Elahinia |
| On-Site Speaker (Planned) |
Parisa Bayati |
| Abstract Scope |
Although additive manufactured (AM) Nitinol parts exhibits acceptable shape memory and superelasticity in compression loadings, they provide a relatively weak tensile and fatigue properties in comparison to the conventionally manufactured Nitinol. As a solution to improve the mechanical properties of the AM fabricated Nitinol and to reduce the internal microvoids, we have investigated the effect of re-melting during the SLM procedure after fabricating each layer. A series of re-melting process parameters including different scanning speed and laser powers were studied through mechanical testing, DSC, and SEM analysis. We have shown that proper selection of the re-melting process parameters improves the powder bed quality of each
layer, increases the density of the fabricated parts by up to %1.5, and reduces the top surface roughness by up to %50. Improving the density and reducing the internal voids may improve the mechanical properties, and it is also being investigated in this work. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Mechanical Properties |