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Meeting MS&T24: Materials Science & Technology
Symposium Composition–Processing–Microstructure-Property Relationships of Titanium Alloys
Presentation Title Novel Ti-Ta-Zr-Mo Alloys Utilizing Martensite-Driven TRIP/TWIP Mechanisms for Cardiovascular Stent Applications
Author(s) Sucharita Banerjee, Junhui Tang, Rajarshi Banerjee, Fan Sun
On-Site Speaker (Planned) Sucharita Banerjee
Abstract Scope This study seeks to advance the field of cardiovascular stent development, which currently yields products with superior mechanical properties but a deficit in biocompatibility. We propose novel metastable Ti alloys which demonstrate a promising combination of excellent biocompatibility and suitable mechanical attributes. These benefits are realized through the employment of TRIP (Transformation induced Plasticity) and TWIP (Twinning induced Plasticity) mechanisms, using non-toxic alloying elements. The need for high radiopacity—improving X-ray visibility, coupled with their relative beta stabilizing strengths, guides the selection of alloying elements. This approach led to set of designed Ti-Ta-Zr-Mo compositions with the potential of exhibiting TRIP/TWIP mechanisms near body temperature. These alloys were arc-melted, cold-rolled, and subjected to heat treatments. Using tensile tests, SEM, EBSD, and TEM, we thoroughly evaluated the alloy’s mechanical properties and conducted an in-depth microstructural analysis. Our findings revealed that the alloys indeed experienced TRIP and TWIP, driven by multiple-step martensitic transformation.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Study on High-Temperature Deformation Behavior, Mechanism and Microstructure Evolution of Ti-900 Alloy for Gas Turbine Blade Application
An AM Defect Model for Fast-Acting Probabilistic Prediction of Defects in Laser Powder Bed Fusion and Its Application to Ti-6Al-4V
ATI High Temperature Titanium Alloy Development for Aerospace Applications
ATI Titan 27® : Exploiting c+a Slip to Improve Performance for Aerospace
Cross-Slips in a Near-α Titanium Alloy Made by Additive Manufacturing
Deformation and Fracture at Basal Twist Grain Boundaries In Ti-6Al-4V
G-1: Effects of Temperature on the Deformation Behavior and Microstructural Evolution during the Hot Compression Test of Ti-6Al-2V-1Fe-1Cr Alloy
G-2: Experimental Investigations on Thermomechanical Fatigue Behavior in Near Alpha Titanium Alloy
G-3: Heterogeneous Nano-Mechanical Response of Bimodal Ti-6Al-4V Alloy
G-4: Study of Microstructure of Titanium Alloys and Its Relation to Mechanical Properties of Alloys for Aerospace Industry
Influence of Zr and O on the Evolution of Microstructural Features in High γ-Phase Ti-Al-Zr Alloys
Investigating Cold Dwell Fatigue Failure in Dual-Phase Ti Alloys: The Perspective of Hard-Soft Grain Interactions
Metastable and Stress-Induced Transformations in Additively Processed Ti-10V-2Fe-3Al
Microstructure, Mechanical, and Electrochemical Properties of Additively Manufactured Ti-5Al-5V-5Mo-3Cr (wt.%)
Novel Ti-Ta-Zr-Mo Alloys Utilizing Martensite-Driven TRIP/TWIP Mechanisms for Cardiovascular Stent Applications
Surface Engineering Ti Alloys and Stress Impacts on Recrystallization
Tailoring Strength and Toughness of a New Titanium Alloy, ATI Titan 23™
Titanium Boron Nitride Nanotubes (Ti-BNNT) Metal Matrix Composite Processed by SPS: Microstructure, Mechanical and Tribological Characteristics
Tuning Alpha Microstructures in Beta Titanium Alloys

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