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Effect of Co and Ni Addition on the Microstructure and Mechanical Properties at Room and Elevated Temperature of an Al–7%Si Alloy
Jönköping University, School of Engineering, JTH, Materials and Manufacturing.ORCID iD: 0000-0001-5753-4052
Jönköping University, School of Engineering, JTH, Materials and Manufacturing.ORCID iD: 0000-0002-3184-7592
Jönköping University, School of Engineering, JTH, Materials and Manufacturing.ORCID iD: 0000-0001-6481-5530
2017 (English)In: International Journal of metalcasting, ISSN 1939-5981, E-ISSN 2163-3193Article in journal (Refereed) Epub ahead of print
Abstract [en]

Increasing environmental demands are forcing the automotive industry to reduce vehicle emissions by producing more light-weight and fuel efficient vehicles. Al–Si alloys are commonly used in automotive applications because of excellent castability, high thermal conductivity, good wear properties and high strength-to-weight ratio. However, most of the aluminium alloys on the market exhibit significantly reduced strength at temperatures above 200 °C. This paper presents results of a study of the effects of Co and Ni in a hypoeutectic Al–Si alloy on microstructure and mechanical properties at room and elevated temperature. Tensile test specimens with microstructures comparable to those obtained in high-pressure die casting, i.e. SDAS ~ 10 µm, were produced by directional solidification in a Bridgman furnace. The results show an improvement in tensile properties up to 230 °C.

Place, publisher, year, edition, pages
Springer, 2017.
Keyword [en]
Al–Si alloy, mechanical properties, cobalt, nickel, elevated temperature
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:hj:diva-37539DOI: 10.1007/s40962-017-0178-zOAI: oai:DiVA.org:hj-37539DiVA: diva2:1146688
Available from: 2017-10-03 Created: 2017-10-03 Last updated: 2017-10-03

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Bogdanoff, ToniDahle, Arne K.Seifeddine, Salem

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