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

Autor: Anamu Ufoma Silas, Ayodele Olusoji Oluremi, Olorundaisi Emmanuel, Babalola Bukola Joseph, Odetola Peter Ifeolu, Ogunmefun Anthony, Ukoba Kingsley, Jen Tien-Chien, Olubambi Peter Apata
Jazyk: English<br />French
Rok vydání: 2024
Předmět:
Zdroj: MATEC Web of Conferences, Vol 406, p 06007 (2024)
Druh dokumentu: article
ISSN: 2261-236X
DOI: 10.1051/matecconf/202440606007
Popis: 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.
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