| Issue |
MATEC Web Conf.
Volume 406, 2024
2024 RAPDASA-RobMech-PRASA-AMI Conference: Unlocking Advanced Manufacturing - The 25th Annual International RAPDASA Conference, joined by RobMech, PRASA and AMI, hosted by Stellenbosch University and Nelson Mandela University
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|---|---|---|
| Article Number | 06007 | |
| Number of page(s) | 9 | |
| Section | Computational & Data-driven Modelling | |
| DOI | https://doi.org/10.1051/matecconf/202440606007 | |
| Published online | 09 December 2024 | |
Phase and mechanical property prediction of intermetallic-strengthening Ti-Al-Cr-Nb-Ni-Cu-Co high entropy alloys by thermo-physical parametric calculation and CALPHAD-based technique
1 Centre for Nanoengineering and Advanced Materials, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg, Johannesburg 2092, South Africa.
2 Department of Mechanical Engineering Science, University of Johannesburg, South Africa
* Corresponding author: usanamu7@gmail.com
Non-conventional alloy developmental approach targeted at incorporating intermetallics as strengtheners using thermo-physical parametric calculation and CALPHAD-based tool (ThermoCalc software) were adopted in the design of septenary non-equiatomic [Ti20Al20Cr5Nb5Ni19Cu12Co19] HEAs. Thermo-physical properties indicated a lightweight and dual-phase HEA having density of 6.22gcm-3 and 6.88 VEC value. At room temperature conditions, computation using ThermoCalc of version 2021b (TCHEA4) encrypted database shows the presence of 6 phases, where BCC_B2, FCC_L12, Sigma, Heusler and C1_Laves are pronounced at varied volume fractions with BCC_B2 occupying 69.8 vol% of the predicted HEA. Traces of O_Phase were observed, and 144.096HV was computed as the maximum predicted total hardness.
Key words: High entropy alloys / thermo-physical parametric calculations / CALPHAD-based method / ThermoCalc software / intermetallic-strengthening
© The Authors, published by EDP Sciences, 2024
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