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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Recent Investigations and Developments of Titanium-containing High Entropy Alloys
Presentation Title Enhanced mechanical properties of Ti60(NbVCr)34Al6 medium entropy by thermomechanical treatment
Author(s) Po-Sung Chen, Yu-Chin Liao, Sin-Mao Song, Pei-Hua Tsai, Jason S. C. Jang
On-Site Speaker (Planned) Po-Sung Chen
Abstract Scope In this study, Ti60(NbVCr)34Al6 was used to discuss the effect of thermo-mechanical treatment on microstructure and mechanical properties. Ti60(NbVCr)34Al6 was subjected to two types of rolling process, cold rolling of 85% (CR85) and cold rolling of 70% after hot rolling of 50% (HR50CR70), and conducted with different rapid annealing time in 1100C furnace. According to XRD results, Ti60(NbVCr)34Al6 can maintain BCC phase, not only in as-cast state but after thermo-mechanical treatment. Through OM observation, recrystallized grains can be observed after annealing in 1100C furnace for 50 s and the grain size of HR50CR70 sample is smaller than CR85 sample after annealing. The tensile test results show the yield strength of these two samples can reach more than 1000 MPa and remain high ductility (more than 14% plastic strain) after annealing. In summary, the mechanical properties of Ti60(NbVCr)34Al6 can be processed flexibly by suitable thermo-mechanical treatment to improve mechanical properties significantly.
Proceedings Inclusion? Planned: None Selected
Keywords High-Entropy Alloys,

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A data-driven analysis for selection of Ti-containing high entropy alloys and future directions
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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
Enhanced mechanical properties of Ti60(NbVCr)34Al6 medium entropy by thermomechanical treatment
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
INFLUENCE OF LASER IN-SITU DIRECT ENERGY DEPOSITION ON THE MECHANICAL PROPERTIES OF HIGH ENTROPY ALLOYS
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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