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FATIGUE-STRENGTH OF FIBER-REINFORCED SQUEEZE CAST PISTON ALLOY GP-ALSI 12 CUMGNI UNDER ELEVATED-TEMPERATURES
被引：5
作者：
SONSINO, CM
BACKER, E
机构：
关键词：
D O I：
10.1002/mawe.19910220203
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
On specimens made of squeeze-cast piston alloy GP-AlSi 12 CuMgNi without reinforcement and Al2O3-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-degrees-C were determined. Moreover, fatigue tests in the range of 5 . 10(4) and 2.5 . 10(7) were carried out for various stress ratios 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 increased thermal load.
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页码：48 / 55
页数：8
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