Effect of aluminum on the friction and wear behavior of AlₓCrFeNi medium-entropy alloys
Several high-entropy alloys (HEAs) and medium-entropy alloys (MEAs) are promising for wear applications due to their excellent strength and fracture toughness. Herein, a series of (Formula presented.) MEAs (x = 0.3, 0.5, 0.8, 1.0, 1.2) are prepared by a vacuum arc-melting techniques. The effects of...
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sg-ntu-dr.10356-1622222022-10-10T06:08:26Z Effect of aluminum on the friction and wear behavior of AlₓCrFeNi medium-entropy alloys Qiao, Ling Ramanujan, Raju V. Zhu, Jingchuan School of Materials Science and Engineering Engineering::Materials Friction Resistance Medium-Entropy Alloys Several high-entropy alloys (HEAs) and medium-entropy alloys (MEAs) are promising for wear applications due to their excellent strength and fracture toughness. Herein, a series of (Formula presented.) MEAs (x = 0.3, 0.5, 0.8, 1.0, 1.2) are prepared by a vacuum arc-melting techniques. The effects of Al content on the crystal structures and mechanical properties are evaluated in terms of hardness and wear resistance. With an increase in Al content, the microstructure changes from face-centered cubic (FCC) + body-centered cubic (BCC)/B2 phases to B2/BCC phases. A higher volume fraction of the BCC phase with increasing Al content favors spinodal decomposition. The Vickers microhardness increases from 345HV (x = 0.3) to 486HV (x = 1.2) with increasing Al content; a nanohardness size effect is revealed by nanoindentation tests. For high Al contents (x = 1.2), the coefficient of friction and wear rate reach the lowest value when the worn surface is smooth with smaller debris, indicating improved wear resistance. Furthermore, this series of MEAs exhibits wear related to abrasion, adhesion, and oxidation; the dominant wear mechanism is influenced by the Al content. Agency for Science, Technology and Research (A*STAR) This work was supported by AME Programmatic Fund by the Agency for Science, Technology and Research, Singapore under grant nos.A1898b0043 and A18B1b0061 and the China Scholarship Council. 2022-10-10T06:08:25Z 2022-10-10T06:08:25Z 2022 Journal Article Qiao, L., Ramanujan, R. V. & Zhu, J. (2022). Effect of aluminum on the friction and wear behavior of AlₓCrFeNi medium-entropy alloys. Advanced Engineering Materials, 24(7), 2101475-. https://dx.doi.org/10.1002/adem.202101475 1438-1656 https://hdl.handle.net/10356/162222 10.1002/adem.202101475 2-s2.0-85127262396 7 24 2101475 en A1898b0043 A18B1b0061 Advanced Engineering Materials © 2022 Wiley-VCH GmbH. All rights reserved. |
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Engineering::Materials Friction Resistance Medium-Entropy Alloys Qiao, Ling Ramanujan, Raju V. Zhu, Jingchuan Effect of aluminum on the friction and wear behavior of AlₓCrFeNi medium-entropy alloys |
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Several high-entropy alloys (HEAs) and medium-entropy alloys (MEAs) are promising for wear applications due to their excellent strength and fracture toughness. Herein, a series of (Formula presented.) MEAs (x = 0.3, 0.5, 0.8, 1.0, 1.2) are prepared by a vacuum arc-melting techniques. The effects of Al content on the crystal structures and mechanical properties are evaluated in terms of hardness and wear resistance. With an increase in Al content, the microstructure changes from face-centered cubic (FCC) + body-centered cubic (BCC)/B2 phases to B2/BCC phases. A higher volume fraction of the BCC phase with increasing Al content favors spinodal decomposition. The Vickers microhardness increases from 345HV (x = 0.3) to 486HV (x = 1.2) with increasing Al content; a nanohardness size effect is revealed by nanoindentation tests. For high Al contents (x = 1.2), the coefficient of friction and wear rate reach the lowest value when the worn surface is smooth with smaller debris, indicating improved wear resistance. Furthermore, this series of MEAs exhibits wear related to abrasion, adhesion, and oxidation; the dominant wear mechanism is influenced by the Al content. |
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School of Materials Science and Engineering |
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School of Materials Science and Engineering Qiao, Ling Ramanujan, Raju V. Zhu, Jingchuan |
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Qiao, Ling Ramanujan, Raju V. Zhu, Jingchuan |
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Qiao, Ling |
title |
Effect of aluminum on the friction and wear behavior of AlₓCrFeNi medium-entropy alloys |
title_short |
Effect of aluminum on the friction and wear behavior of AlₓCrFeNi medium-entropy alloys |
title_full |
Effect of aluminum on the friction and wear behavior of AlₓCrFeNi medium-entropy alloys |
title_fullStr |
Effect of aluminum on the friction and wear behavior of AlₓCrFeNi medium-entropy alloys |
title_full_unstemmed |
Effect of aluminum on the friction and wear behavior of AlₓCrFeNi medium-entropy alloys |
title_sort |
effect of aluminum on the friction and wear behavior of alₓcrfeni medium-entropy alloys |
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2022 |
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https://hdl.handle.net/10356/162222 |
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