Abstract
Low-cycle fatigue tests were performed on silver matrix-steel-fibre-reinforced composites (FRC) with unidirectionally aligned fibres of constant volume-fraction,V f=0.35. The influence of various material parameters, namely the fibre and matrix strengths, the interfacial bond strength and the mean fibre diameter, was examined. Low-cycle fatigue hardening and softening of FRCs deviate from the behaviour expected from the properties of the components. The differences are mainly based on a specific deformation or recrystallization structure of the composite matrix. The shapes of the stress—strain hysteresis loops are discussed qualitatively and compared to the experimental results. The comparison of fatigue life for different material conditions shows that the design of low-cycle fatigue-resistant metallic-fibre composites requires material criteria similar to those known to be responsible for high ultimate tensile strengths. The criteria may be varied if the composites are subjected to high-cycle fatigue loading.
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Rosenkranz, G., Gerold, V., Stöckel, D. et al. Fatigue behaviour of metallic fibre-reinforced materials: a study of steel fibre-reinforced silver. J Mater Sci 17, 264–276 (1982). https://doi.org/10.1007/BF00809062
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DOI: https://doi.org/10.1007/BF00809062