| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Sanchez, Sergio Gonzalez
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2023Investigation of the strain rate sensitivity of CoCrFeMnNiTix (x=0, 0.3) high-entropy alloys using the shear punch testcitations
- 2022A Critical Review on Al-Co Alloys: Fabrication Routes, Microstructural Evolution and Propertiescitations
- 2022Tribological Behavior of Microalloyed Cu50Zr50 Alloy
- 2022Conductivity Behaviour under Pressure of Copper Micro-Additive/Polyurethane Composites (Experimental and Modelling)citations
- 2022Unravelling the combined effect of cooling rate and microalloying on the microstructure and tribological performance of Cu50Zr50citations
- 2020Wear rate at RT and 100 °C and operating temperature range of microalloyed Cu50Zr50 shape memory alloycitations
- 2019Stress-induced martensitic transformation of Cu50Zr50 shape memory alloy optimized through microalloying and co-microalloyingcitations
- 2018Tuning the antimicrobial behaviour of Cu85Zr15 thin films in “wet” and “dry” conditions through structural modificationscitations
- 2017Copper-rich metallic glass composite as antimicrobial material
Places of action
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article
Tribological Behavior of Microalloyed Cu50Zr50 Alloy
Abstract
Promoting the martensitic transformation through optimum microalloying with Fe and/or Mn was observed to be an effective method to enhance the wear resistance of the Cu50Zr50 at% shape memory alloy (SMA). Among all the potential microelements and concentrations, partial replacement of Cu by up to 1 at% Fe and Mn is of interest since from density functional-based calculations, large minimization of the stacking fault energy (SFE) of the B2 CuZr phase is predicted. For this reason, an effective martensitic transformation is expected. The largest decrease of the SFE from 0.36 J/m2 to 0.26 J/m2 is achieved with partial replacement of Cu by 0.5 at% Fe. This results in the highest martensitic transformation upon wear testing, especially at highest load (15 N) for which the mass loss is 0.0123 g compared to 0.0177 g for Cu50Zr50 and a specific wear-rate of 5.9 mm3/Nm, compared to 8.5 for mm3/Nm for Cu50Zr50. This agrees with the low coefficient of friction of 0.48 ± 0.05 and low roughness of 0.200 ± 0.013 µm of the Fe-containing alloy compared to that for Cu50Zr50, 0.55 and 0.415 ± 0.026 µm, respectively. All the worn surfaces show the formation of abrasive grooves, being shallowest for the more wear resistant 0.5 at% Fe alloy. The second more wear resistant alloy contains 0.5 at% Mn. Wear mechanisms of abrasion, adhesion, and delamination have been identified.