[Kovove materialy - Metallic materials]
    Fri - March 29, 2024 - 12:22 No. of hits : 1736694 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 44 (2006), Issue 3

Dry sliding wear of 332.0 unaged Al-Si alloys at elevated temperatures
SEVIM, I.
vol. 44 (2006), no. 3, pp. 151 - 159

Abstract
In this study, the effect of elevated temperatures on dry sliding wear and the coefficient of friction of cast 332.0 Al-Si alloys has been investigated. Block on disc type of wear and friction testing machine was used. Dry sliding wear tests were performed at elevated temperatures and a contact load of 55 N against hardened steel disc. The mass loss of test material during dry sliding wear test was determined gravimetrically. The results for the 332.0 Al-Si alloys show that there are two temperature zones, whose boundary is determined by the critical temperature (Tc= 127°C), for wear rate or specific wear resistance at elevated temperatures.
The empirical wear rate or specific wear resistance expressions as a function of elevated temperature are derived using the data from experiments. Additionally, a Boltzmann- type approximation is formulated empirically for the coefficient of friction of these Al-Si alloys as a function of elevated temperature using a relation between the adhesion and friction coefficients.

Key words
332.0 Al-Si alloys, dry sliding wear, elevated temperatures, mild and severe wear, adhesion and friction coefficients

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.


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