About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
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Phase Transformations and Microstructural Evolution
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Presentation Title |
Healable Ti-6Al-4V base alloy with cyclability between stress-induced martensite transformation and thermally induced β transformation |
Author(s) |
Kiwan Seo, Ji Young Kim, Cham Il Kim, Eun Soo Park, Do-Hyang Kim |
On-Site Speaker (Planned) |
Kiwan Seo |
Abstract Scope |
Ti-6Al-4V alloy is extremely difficult to forming and machining. To overcome such a demerit of Ti-6Al-4V alloy, additive manufacturing (AM) method receives a significant attention. However, one of the major challenges is that the microstructure after AM mainly consists of α’ martensite due to high cooling rate, significantly limiting the balance of strength and ductility. Therefore, our study aims to develop a Ti-6Al-4V base alloy with enhanced ductility by introducing stress-induced martensite transformation (SIMT). The martensite phase after deformation can be reversed to original beta phase enabling the cyclability between SIMT and thermally induced β transformation. To control the beta phase stability, (Ti-6Al-4V)-(Fe-Nb) and (Ti-6Al-4V)-(Fe, Cr, Mn) alloy systems have been investigated in the present study. Our results show that healable Ti-6Al-4V base alloy with cyclability between SIMT and thermally induced β transformation can be developed by precise control of the beta phase stability. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Phase Transformations, Mechanical Properties |