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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Recent Investigations and Developments of Titanium-containing High Entropy Alloys
Presentation Title 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
Author(s) Gopal Babu Viswanathan, Jean-Philippe Couzinie, Zachary T. Kloenne, Brian A. Welk, Oleg N. Senkov, Hamish L. Fraser
On-Site Speaker (Planned) Gopal Babu Viswanathan
Abstract Scope The introduction of refractory elements in the high-entropy concept has led to the design of complex alloys with body centered cubic (BCC) microstructure with the aim to develop new materials with enhanced mechanical properties at high temperature. In particular, the ordered B2 phase in the BCC matrix has been highly sought in the case of refractory compositions with the aim to mimic the g-g’ type microstructure obtained in Ni-based superalloys. In alloy Al1 Mo0.5 Nb1Ta0.5Ti1Zr1 in this study the microstructure is however inverted compared to Ni-based superalloys with a B2 matrix and BCC precipitates embedded in it. To this end, the current study will focus on describing first the concomitant formation of fine scale microstructure leading to BCC+B2 microstructures with strong analogy to Ni-based superalloys and second, the characterization of defects in the plastic zone beneath the nano-indentation at RT.
Proceedings Inclusion? Planned: None Selected
Keywords High-Entropy Alloys,

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A data-driven analysis for selection of Ti-containing high entropy alloys and future directions
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Compositional Dependence of the (TiZrHf)50Ni25Co10Cu15 High Entropy Alloy Shape Memory Properties
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Designing porous refractory high entropy alloy using the dealloying method
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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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