Microstructure and mechanical properties of Ni-17Cr-xCo ternary alloys fabricated via field-assisted sintering

Bukola J. Babalola; Olusoji O. Ayodele; Mary A. Awotunde; Samuel O. Akinwamide; Peter A. Olubambi

doi:10.1016/j.matlet.2021.130404

Microstructure and mechanical properties of Ni-17Cr-xCo ternary alloys fabricated via field-assisted sintering

Bukola J. Babalola, Olusoji O. Ayodele, Mary A. Awotunde, Samuel O. Akinwamide, Peter A. Olubambi

Metallurgy

University of Johannesburg

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Herein, the microstructure and mechanical properties of Ni-17Cr-xCo, x = (2, 6, 10 wt%) ternary alloy system fabricated through field-assisted sintering technique for turbine disc applications were assessed. The sintered alloy's average relative density reduces from 97.56% to 96.02%, with increasing cobalt content. The nanoindentation result shows that the hardness and elastic modulus of the alloys increases as the Co-content increases. The phase diagram calculations of the alloys via Thermo-Calc software predicted the stability of fcc crystal structure from 403 °C to 1406 °C for the compositions considered in this study.

Original language	English
Article number	130404
Journal	Materials Letters
Volume	302
DOIs	https://doi.org/10.1016/j.matlet.2021.130404
Publication status	Published - 1 Nov 2021

Keywords

Microstructure
Nanoindentation
Nickel-based alloy
Phase-diagrams
Sintering

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.matlet.2021.130404

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title = "Microstructure and mechanical properties of Ni-17Cr-xCo ternary alloys fabricated via field-assisted sintering",

abstract = "Herein, the microstructure and mechanical properties of Ni-17Cr-xCo, x = (2, 6, 10 wt%) ternary alloy system fabricated through field-assisted sintering technique for turbine disc applications were assessed. The sintered alloy's average relative density reduces from 97.56% to 96.02%, with increasing cobalt content. The nanoindentation result shows that the hardness and elastic modulus of the alloys increases as the Co-content increases. The phase diagram calculations of the alloys via Thermo-Calc software predicted the stability of fcc crystal structure from 403 °C to 1406 °C for the compositions considered in this study.",

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T1 - Microstructure and mechanical properties of Ni-17Cr-xCo ternary alloys fabricated via field-assisted sintering

AU - Babalola, Bukola J.

AU - Ayodele, Olusoji O.

AU - Awotunde, Mary A.

AU - Akinwamide, Samuel O.

AU - Olubambi, Peter A.

PY - 2021/11/1

Y1 - 2021/11/1

N2 - Herein, the microstructure and mechanical properties of Ni-17Cr-xCo, x = (2, 6, 10 wt%) ternary alloy system fabricated through field-assisted sintering technique for turbine disc applications were assessed. The sintered alloy's average relative density reduces from 97.56% to 96.02%, with increasing cobalt content. The nanoindentation result shows that the hardness and elastic modulus of the alloys increases as the Co-content increases. The phase diagram calculations of the alloys via Thermo-Calc software predicted the stability of fcc crystal structure from 403 °C to 1406 °C for the compositions considered in this study.

AB - Herein, the microstructure and mechanical properties of Ni-17Cr-xCo, x = (2, 6, 10 wt%) ternary alloy system fabricated through field-assisted sintering technique for turbine disc applications were assessed. The sintered alloy's average relative density reduces from 97.56% to 96.02%, with increasing cobalt content. The nanoindentation result shows that the hardness and elastic modulus of the alloys increases as the Co-content increases. The phase diagram calculations of the alloys via Thermo-Calc software predicted the stability of fcc crystal structure from 403 °C to 1406 °C for the compositions considered in this study.

KW - Microstructure

KW - Nanoindentation

KW - Nickel-based alloy

KW - Phase-diagrams

KW - Sintering

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SN - 0167-577X

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JO - Materials Letters

JF - Materials Letters

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ER -

Microstructure and mechanical properties of Ni-17Cr-xCo ternary alloys fabricated via field-assisted sintering

Abstract

Keywords

ASJC Scopus subject areas

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