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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Recent Investigations and Developments of Titanium-containing High Entropy Alloys
Presentation Title Design and characterization of novel Ti-Zr-Nb-Mn-Fe medium and high entropy alloys for biomedical applications
Author(s) Nour Mahmoud Eldabah, Mohamed Abdel-Hady Gepreel
On-Site Speaker (Planned) Mohamed Abdel-Hady Gepreel
Abstract Scope Ti-based alloys show low elastic modulus, high biocompatibility, and high corrosion resistance compared to Fe-based and Co-based alloys. Also, high/medium entropy Ti-Zr-Nb-base alloys would have lower elastic modulus besides the expected high corrosion resistance, therefore, become candidate for biomedical applications. In this study, four Ti-Zr rich Ti-Zr-Nb-Mn-Fe medium/high entropy alloys are designed using THERMOCALC software to achieve single/multi metastable bcc-phases. In addition, the alloys would have low liquids temperature, in the range 1200-1250oC, to enhance alloys' castability and widen the room of biomedical application including easy-cast and additive manufactured implants. Upon THERMOCALC calculations, Mn and Fe additions were found to reduce the liquids temperature and stabilize the bcc phases. However, the content of Mn and Fe should be controlled to avoid intermetallic formation. The alloys are produced by arc remelting followed by full characterization of the alloys including; SEM, EDX, XRD, EBSD, corrosion, hardness, tensile and compression testing.
Proceedings Inclusion? Planned: None Selected
Keywords Biomaterials, Characterization, High-Entropy Alloys


A data-driven analysis for selection of Ti-containing high entropy alloys and future directions
Biocompatible titanium containing medium and high entropy alloys
Compositional Dependence of the (TiZrHf)50Ni25Co10Cu15 High Entropy Alloy Shape Memory Properties
Design and characterization of novel Ti-Zr-Nb-Mn-Fe medium and high entropy alloys for biomedical applications
Designing porous refractory high entropy alloy using the dealloying method
Effect of elemental combination on microstructure and mechanical properties of refractory medium entropy alloys
Effect of Hf and Zr composition on the phase equilibria and transformation temperatures of the (TiZrHf)50Co10Ni25Cu15 multi-principal element shape memory alloy
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Evolution of Microstructure and Deformation Substructure in Al1 Mo0.5 Nb1Ta0.5Ti1Zr1, a Refractory HEA Alloy with Disordered BCC Precipitates Embedded in a Continuous Ordered B2 Matrix
Gas tungsten arc welding of Cr29.7Co29.7Ni35.4Al4Ti1.2 (at.%) high entropy alloy
In-Situ Laser-Deposited Ti-Based High Entropy Alloys for Aerospace Applications
Investigation of the BCC Phase Formation Region in the Al-Cr-Fe-Ti-V High-Entropy Alloys by Using High-Throughput Computational Method.
Investigation of the Temperature Dependence of Tensile Deformation Substructures in NbTiZr , Single Phase Equiatomic BCC Refractory High Entropy Alloy (RHEA)
Neural-Network based atomistic simulation on chemical ordering formation and its kinetics in medium entropy alloys
Phase stability and the role of Ti in W-Ta-Ti-Cr-V high-entropy alloys from the first principles thermodynamic study with experimental validation
Phase stability of hcp-HEAs containing Ti
Predicting the compositions of an Al-Co-Fe-Ni-Ti high-entropy system by the calculation of phase diagrams method coupled with high-throughput computations
Single-crystal mechanical properties of equiatomic and non-equiatomic high-entropy alloys
Solidification Microstructure of High Entropy Alloys Composed with 3d transition metal and silicon

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