Abstract
A wide variety of aluminum alloys in standard tempers were investigated using strain control fatigue and transmission electron microscopy. The log of the number of reversals to failure increased linearly with decreasing log of the plastic-strain amplitude down to a critical level which was alloy and temper dependent. Below the critical level of plastic strain, failure times were shorter than would be predicted by extrapolating the high-plastic-strain-amplitude data. Transmission electron microscopy revealed that specimens tested above the critical level deformed homogeneously, while those tested below the critical level deformed heterogeneously; consequently, microstructures which would maintain homogeneous slip at low plastic deformation should provide better resistance to fatigue initiation.
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Sanders, T.H., Mauney, D.A., Staley, J.T. (1977). Strain Control Fatigue as a Tool to Interpret Fatigue Initiation of Aluminum Alloys. In: Jaffee, R.I., Wilcox, B.A. (eds) Fundamental Aspects of Structural Alloy Design. Battelle Institute Materials Science Colloquia, vol 31. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-2421-8_17
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DOI: https://doi.org/10.1007/978-1-4684-2421-8_17
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