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

Anamu Ufoma Silas; Ayodele Olusoji Oluremi; Olorundaisi Emmanuel; Babalola Bukola Joseph; Odetola Peter Ifeolu; Ogunmefun Anthony; Ukoba Kingsley; Jen Tien-Chien; Olubambi Peter Apata

doi:10.1051/matecconf/202440606007

MATEC Web of Conferences (Jan 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

Anamu Ufoma Silas,
Ayodele Olusoji Oluremi,
Olorundaisi Emmanuel,
Babalola Bukola Joseph,
Odetola Peter Ifeolu,
Ogunmefun Anthony,
Ukoba Kingsley,
Jen Tien-Chien,
Olubambi Peter Apata

Affiliations

Anamu Ufoma Silas: Centre for Nanoengineering and Advanced Materials, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg
Ayodele Olusoji Oluremi: Centre for Nanoengineering and Advanced Materials, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg
Olorundaisi Emmanuel: Centre for Nanoengineering and Advanced Materials, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg
Babalola Bukola Joseph: Centre for Nanoengineering and Advanced Materials, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg
Odetola Peter Ifeolu: Centre for Nanoengineering and Advanced Materials, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg
Ogunmefun Anthony: Centre for Nanoengineering and Advanced Materials, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg
Ukoba Kingsley: Department of Mechanical Engineering Science, University of Johannesburg
Jen Tien-Chien: Department of Mechanical Engineering Science, University of Johannesburg
Olubambi Peter Apata: Centre for Nanoengineering and Advanced Materials, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg

DOI: https://doi.org/10.1051/matecconf/202440606007
Journal volume & issue: Vol. 406
p. 06007

Abstract

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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.

Published in MATEC Web of Conferences

ISSN: 2261-236X (Online)
Publisher: EDP Sciences
Country of publisher: France
LCC subjects: Technology: Engineering (General). Civil engineering (General)
Website: http://www.matec-conferences.org

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