Abstract
Objective of this work is to investigate the behavior of AlSi12 specimens under fatigue loading. It describes the impact of various surface treatments like turning, polishing, shot peening and deep rolling on the S-N curve. Surface treatments, which create compressive residual stresses in near-surface regions show an improved fatigue strength. Deep rolling leads to the best results. Furthermore, the scatter of the S-N curves is discussed. Crack initiation seems to be sensitive to surface treatment. It is concluded, that in the case of rough surfaces the crack starts at surface defects whereas for improved surface conditions, for example polishing, the crack may start at pores in near-surface regions.
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Greuling, S., Weise, W., Fetzer, D., Müller-Lohmeier, K., Speckle, MM. (2019). Impact of Various Surface Treatments on the S-N Curve of Additive Manufactured AlSi12. In: Correia, J., De Jesus, A., Fernandes, A., Calçada, R. (eds) Mechanical Fatigue of Metals. Structural Integrity, vol 7. Springer, Cham. https://doi.org/10.1007/978-3-030-13980-3_11
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DOI: https://doi.org/10.1007/978-3-030-13980-3_11
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