| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
2024 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-23: Understanding the Microstructure Evolution in the Selective Laser Melted Near-alpha Ti-6Al-2Sn-4Zr-2Mo Alloy using Advanced Characterization Techniques |
| Author(s) |
Deepak V. Pillai, Sydney Fields, Dian Li, Yufeng Zheng |
| On-Site Speaker (Planned) |
Deepak V. Pillai |
| Abstract Scope |
Due to their exceptional creep properties, near-alpha titanium alloys are extensively employed as high-temperature structural materials in the aerospace industry. Recently, additive manufacturing (AM) has gained substantial recognition in the production of hard-to-machine titanium alloys. However, the mechanical performance of AM fabricated near alpha titanium alloys still requires improvement due to the formation of large amount of martensite with poor ductility. In this work, we studied the microstructure evolution in selective laser melted (SLMed) Ti-6Al-2Sn-4Zr-2Mo alloy during post-heat treatment using SEM, TEM, 3D FIB-SEM tomography and 3D APT techniques. The influence of the aging temperature on the martensite decomposition during post-heat treatment was systematically investigated. Different alpha microstructures varying in morphology, size and distribution were achieved using different post-heat treatment and quantitatively analyzed. The phase transformation pathways within different temperature ranges will be discussed. This work is supported by the NSF CAREER Award, grant DMR – 2145844. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Additive Manufacturing, Titanium, Characterization |