About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
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Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
Presentation Title |
Room Temperature Interface Sliding in TIMETAL-407 |
Author(s) |
Zachary T. Kloenne, Gopal Viswanathan, Matt Thomas, Michael Loretto, Hamish L Fraser |
On-Site Speaker (Planned) |
Zachary T. Kloenne |
Abstract Scope |
Titanium alloys are excellent candidates for aerospace applications owing to their high strength to weight ratio. Alpha/beta titanium alloys are used in nearly all sections of the aircraft, including the fuselage, landing gear, and wing. Ti-0.85Al-3.9V-0.25Si-0.25Fe (Ti-407) is an excellent candidate for alloy applications requiring excellent machinability and increased energy absorption. Through a combination of electron backscattered diffraction (EBSD) and diffraction contrast imaging, it was determined that the alloy deforms significantly by <c+a> slip in both hard and soft grains. More surprisingly, Ti-407 has also been shown to deform by interface sliding during room temperature tensile tests. The nature of this sliding has been investigated using in-situ straining in a scanning electron microscope (SEM). The alpha/beta interface was explored using atom probe tomography (APT) and high resolution scanning transmission electron microscopy (HRSTEM) to provide insight on the cause of interface sliding. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |