| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Process-induced Microstructures and Defects
|
| Presentation Title |
Additive Process Parameter Optimisation, Heat Treatment and High Cycle Fatigue of Ti6242 |
| Author(s) |
Satyam Suwas, Dipankar Banerjee, Gyan Shankar, Hitardha Rama, Saem Ahmed, Vasisht Venkatesh, Goudu Appa Rao |
| On-Site Speaker (Planned) |
Satyam Suwas |
| Abstract Scope |
Additive processing parameters are optimised for Ti-6Al-2Sn-4Zr-2Mo (Ti6242) through design of experiment approaches to minimise porosity for Ti6242 both through a DED and LPBF process. HIP, both above and below the alpha/beta transus, has been used to reduce or eliminate residual porosity in the LPBF as printed materials. Further, a defect structure process map was proposed for the Ti6242 alloy printed through both DED and LPBF routes. The microstructure of as printed materials and after HIP has been characterized. Heat-treatments have also been performed and microstructural evolution is characterised for beta grain size, shape, lath alpha variant distribution and retained beta. As-printed morphology of the grains could be changed to equiaxed prior beta grain-boundaries through heat-treatment. High cycle fatigue properties of material heat treated without HIPing are poor because of residual porosity, although tensile priorities are satisfactory, but equivalent to forged material in both sub-transus and super-transus HIP +aged conditions. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Titanium, Mechanical Properties |