High Temperature Fatigue Strength and Quantitative Metallography of an Eutectic Al-Si Alloy for Piston Application

Radomila Konečná; Stanislava Fintova; Gianni Nicoletto; Enrica Riva

doi:10.4028/www.scientific.net/KEM.592-593.627

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 592-593High Temperature Fatigue Strength and Quantitative...

High Temperature Fatigue Strength and Quantitative Metallography of an Eutectic Al-Si Alloy for Piston Application

Abstract:

Eutectic Al-Si alloys are typically used for the production of internal combustion engine pistons. A high-cycle, high-temperature fatigue characterization of AlSi12 alloy performed using specimens extracted from actual pistons is presented and discussed. Fatigue strength at 10⁷ cycles were obtained at test temperatures of 250 °C, 300 °C and 350 °C. The fatigue strength reduction was quantified. The micro structural features were quantified by quantitative metallography and fatigue fracture surfaces inspected to identify the initiation causes.

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Periodical:

Key Engineering Materials (Volumes 592-593)

Pages:

627-630

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.592-593.627

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Online since:

November 2013

Authors:

Radomila Konečná*, Stanislava Fintova, Gianni Nicoletto, Enrica Riva

Keywords:

Eutectic Al-Si Alloys, High Temperature Fatigue, Metallography, Overaging, Piston

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