Articles producció científica> Enginyeria Mecànica

Tribological Behavior of Microalloyed Cu50Zr50 Alloy

  • Dades identificatives

    Identificador: imarina:9241961
    Autors:
    Younes, A.de la Flor, S.Clark, S. J.Nutter, J.Birkett, M.Watson, J. O.Unthank, M.Gonzalez, Sergio
    Resum:
    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/m(2) to 0.26 J/m(2) 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 mm(3)/Nm, compared to 8.5 for mm(3)/Nm for Cu50Zr50. This agrees with the low coefficient of friction of 0.48 +/- 0.05 and low roughness of 0.200 +/- 0.013 mu m of the Fe-containing alloy compared to that for Cu50Zr50, 0.55 and 0.415 +/- 0.026 mu m, 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.
  • Altres:

    Autor segons l'article: Younes, A.; de la Flor, S.; Clark, S. J.; Nutter, J.; Birkett, M.; Watson, J. O.; Unthank, M.; Gonzalez, Sergio;
    Departament: Enginyeria Mecànica
    Autor/s de la URV: De la Flor Lopez, Silvia
    Paraules clau: Wear Stress Sliding Martensitic-transformation Bulk metallic-glass Adhesion Abrasion
    Resum: 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/m(2) to 0.26 J/m(2) 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 mm(3)/Nm, compared to 8.5 for mm(3)/Nm for Cu50Zr50. This agrees with the low coefficient of friction of 0.48 +/- 0.05 and low roughness of 0.200 +/- 0.013 mu m of the Fe-containing alloy compared to that for Cu50Zr50, 0.55 and 0.415 +/- 0.026 mu m, 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.
    Àrees temàtiques: Surfaces, coatings and films Surfaces and interfaces Mechanics of materials Mechanical engineering Matemática / probabilidade e estatística Engineering, mechanical Engenharias iii Engenharias ii Ciência da computação
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    Adreça de correu electrònic de l'autor: silvia.delaflor@urv.cat
    Identificador de l'autor: 0000-0002-6851-1371
    Data d'alta del registre: 2024-09-07
    Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
    Enllaç font original: https://asmedigitalcollection.asme.org/tribology/article-abstract/144/2/021706/1119383/Tribological-Behavior-of-Microalloyed-Cu50Zr50?redirectedFrom=fulltext
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referència a l'article segons font original: Journal Of Tribology-Transactions Of The Asme. 144 (2):
    Referència de l'ítem segons les normes APA: Younes, A.; de la Flor, S.; Clark, S. J.; Nutter, J.; Birkett, M.; Watson, J. O.; Unthank, M.; Gonzalez, Sergio; (2022). Tribological Behavior of Microalloyed Cu50Zr50 Alloy. Journal Of Tribology-Transactions Of The Asme, 144(2), -. DOI: 10.1115/1.4052363
    DOI de l'article: 10.1115/1.4052363
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2022
    Tipus de publicació: Journal Publications
  • Paraules clau:

    Engineering, Mechanical,Mechanical Engineering,Mechanics of Materials,Surfaces and Interfaces,Surfaces, Coatings and Films
    Wear
    Stress
    Sliding
    Martensitic-transformation
    Bulk metallic-glass
    Adhesion
    Abrasion
    Surfaces, coatings and films
    Surfaces and interfaces
    Mechanics of materials
    Mechanical engineering
    Matemática / probabilidade e estatística
    Engineering, mechanical
    Engenharias iii
    Engenharias ii
    Ciência da computação
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