Micromechanical behavior of (CoCrNi)94Al3Ti3 medium-entropy alloy
The micromechanical behavior of (CoCrNi)94Al3Ti3 medium-entropy alloy (MEA) with and without Al2O3 nanoparticles was investigated by nanoindentation, microhardness, and microscratch tests. Adding Al2O3 nanoparticles in the (CoCrNi)94Al3Ti3 MEA increases elastic modulus, hardness, brittleness, and fr...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-07-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425014255 |
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| Summary: | The micromechanical behavior of (CoCrNi)94Al3Ti3 medium-entropy alloy (MEA) with and without Al2O3 nanoparticles was investigated by nanoindentation, microhardness, and microscratch tests. Adding Al2O3 nanoparticles in the (CoCrNi)94Al3Ti3 MEA increases elastic modulus, hardness, brittleness, and friction coefficient. The MEAs with and without Al2O3 exhibit indentation-induced pile-up, resulting in the inapplicability of the Oliver & Pharr method. The elastic modulus and indentation hardness were assessed by the work-based approach. Indentation size effect is observed for the MEA, but is absent with the addition of Al2O3 nanoparticles. |
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| ISSN: | 2238-7854 |