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1991
Journal Article
Titel
Schwingfestigkeit der keramikverstärkten Kolbengußlegierung GP-AlSi 12 CuMgNi bei erhöhten Temperaturen
Alternative
Fatigue strength of fibre-reinforced squeeze cast piston alloy GP-AlSi 12 CuMgNi under elevated temperatures
Abstract
On specimens made of squeeze-cast piston alloy GP-AlSi 12 CuMgNi without reinforcement and Al sub2 O sub3-fibre-reinforced, thermal fatigue was investigated. Several mechanical properties such as tensile and compressive yield strength, incremental-step-method based monotonic and cyclic stress-strain curves in the temperature range of 20 to 400 degree C were determined. Moreover, fatigue tests in the range of 5 . 10 high 4 and 2.5 . 10 high7 were carried out for various stress rations in the same temperature range on unnotched specimens and S-N-curves were designed. Haigh-diagramms show the mean stress sensitivity of the materials. Obviously the fibre reinforced material is superiour at all regarded temperatures. The considerable gain of material strength obtained by fibre-reinforcement entails even better conditions for the use of newly developed pistons under incrased thermal load.
Author(s)
Language
English
Tags
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casting alloy
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ceramic
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compression test
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Druckversuch
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faserverstärkter Werkstoff
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fatigue strength
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fibre reinforced material
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Gußlegierung
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high temperature
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hohe Temperatur
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Keramik
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mechanical stress
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mechanische Beanspruchung
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Schwingfestigkeit
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Spannungsdehnungskurve
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stress strain curve
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tension test
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thermal shock
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thermal stress
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thermische Beanspruchung
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Thermoschockversuch
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Zugversuch