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The effect of Ni and Zr additions on hardness, elastic modulus and wear performance of Al-SiCp composite
Jönköping University, School of Engineering, JTH, Materials and Manufacturing.ORCID iD: 0000-0002-2361-8810
Jönköping University, School of Engineering, JTH, Materials and Manufacturing. ENSICAEN, Caen, France.
Jönköping University, School of Engineering.ORCID iD: 0009-0003-3355-3146
Jönköping University, School of Engineering.
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2022 (English)In: Tribology International, ISSN 0301-679X, E-ISSN 1879-2464, Vol. 169, article id 107478Article in journal (Refereed) Published
Sustainable development
Sustainable Development
Abstract [en]

The strive for lightweight in the automotive industry points to aluminium metal matrix composites as substitutes of cast iron in brake discs. The wear performance of the material is critical, besides suitable mechanical resistance and thermal properties. The present study investigated the wear behaviour of Al-Si alloys reinforced with silicon carbide particles. The matrix alloy was added with nickel and zirconium, and nanoindentation was performed to determine intermetallic phases' hardness and elastic modulus. The addition of 20 wt% carbides determined an elastic modulus 35–40 % higher than the matrix alloys. Wear rate was in the 2–8 * 10-5 mm3/N * m range for all materials. The tribo-layer had a critical role in the wear performance, as the coefficient of friction decreased during wear.

Place, publisher, year, edition, pages
Elsevier, 2022. Vol. 169, article id 107478
Keywords [en]
Brake, Metal matrix, Nanoindentation, Wear, Aluminum alloys, Automotive industry, Brakes, Cast iron, Elastic moduli, Friction, Hardness, Metallic matrix composites, Silicon alloys, Silicon carbide, Wear of materials, Zirconium, Al/SiCp composites, Aluminum metal matrix composites, Brake disks, Matrix alloy, Mechanical resistance, Nano indentation, Ni additions, Wear performance, Zr addition
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:hj:diva-55914DOI: 10.1016/j.triboint.2022.107478ISI: 000761219700002Scopus ID: 2-s2.0-85124185162Local ID: HOA;intsam;796847OAI: oai:DiVA.org:hj-55914DiVA, id: diva2:1639270
Funder
Knowledge Foundation, 20201702Available from: 2022-02-21 Created: 2022-02-21 Last updated: 2024-09-24Bibliographically approved

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Lattanzi, LuciaLi, ZiyuJarfors, Anders E.W.

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