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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Recent Investigations and Developments of Titanium-containing High Entropy Alloys
Presentation Title Investigation of the BCC Phase Formation Region in the Al-Cr-Fe-Ti-V High-Entropy Alloys by Using High-Throughput Computational Method.
Author(s) Chia Lin Lee, Po-Cheng Kuo, Yee-Wen Yen
On-Site Speaker (Planned) Chia Lin Lee
Abstract Scope This study used the calculation of phase diagram method (CALPHAD) with the high-throughput computation (HTC) method to simulate Al-Cr-Fe-Ti-V light-weight high-entropy alloy systems. The Alloy 1 to 6 composed of Al35Cr30Fe25Ti5V5, Al35Cr25Fe25Ti10V5, Al35Cr20Fe25Ti15V5, Al35Cr15Fe25Ti20V5, Al35Cr25Fe5Ti10V25, Al35Cr10Fe5Ti15V35 were selected from the simulation results, which are expected to be BCC single-phase. The as-cast alloys prepared by the arc furnace and all alloys were aged at 1100C for 240 h. Based on the analytical results, the six alloys are mainly composed of the BCC phase, and Laves C14 precipitates in some alloys due to experimental deviation, the addition of Ti and V in alloys would reduce the alloy’s density. These six alloys are light-weight high-entropy alloy. The Al35Cr10Fe5Ti15V35 has the lowest density and the value is 4.67 g/cm3. As the Ti increase in alloys would strengthen the alloy’s hardness. The as-cast Al35Cr15Fe25Ti20V5 has the largest hardness and the value is 1018 HV.
Proceedings Inclusion? Planned: None Selected
Keywords High-Entropy Alloys, Titanium, Mechanical Properties

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