About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Minerals, Metals and Materials 2026 - In-Situ Characterization Techniques
|
| Presentation Title |
Characterization of Shear Band Formation and Microstructure Evolution Using the Quick-Stop Method in Orthogonal Cutting of Ti-5Al-5V-5Mo-3Cr |
| Author(s) |
Minh Loi, David P. Yan |
| On-Site Speaker (Planned) |
David P. Yan |
| Abstract Scope |
Ti-5Al-5V-5Mo-3Cr (Ti-5553), a near-β titanium alloy, offers high strength, fatigue durability, and corrosion resistance, making it ideal for aerospace structural applications such as landing gear components. However, it presents significant machining challenges due to low thermal conductivity, and high chemical reactivity. This study characterizes shear band formation and microstructure evolution during orthogonal cutting of Ti-5553 using a quick-stop method. SEM and EBSD analyses of chips collected immediately after the interruption captured transient deformation structures. Distinct adiabatic shear bands (ASBs) were observed, exhibiting grain refinement and a microstructural gradient from the ASB core to the surrounding matrix. SEM revealed submicron grains within ASBs, indicating dynamic recrystallization under severe plastic deformation and localized heating. EBSD confirmed grain size reduction and texture evolution, with pole figures showing lattice rotations within shear zones. These findings provide valuable insights into deformation mechanisms during machining of Ti-5553 and inform process optimization strategies for improved machinability. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Shaping and Forming, Titanium |