Abstract
In the present paper the aluminum alloys EN AW-6082 (peak-aged and overaged) and EN AW-5083 (solution annealed) were investigated regarding the long fatigue crack growth behavior in the range of very low amplitudes and therefore very high number of load cycles. The cracks were initiated at micro notches, prepared by means of focused ion beam technology and examined in situ by a long distance microscope. In first experiments the threshold for each material condition was defined. Subsequently the tests were carried out at constant ΔK values. Further analysis such as electron backscatter diffraction (EBSD) and confocal microscopy were executed to analyze the fatigue crack growth behavior. A microstructural barrier function of the primary precipitates could be detected for each material condition. Grain boundaries seem to influence the crack growth only in case of the work hardening alloy (EN AW-5083), which is the material with smaller average grain size compared to EN AW-6082.
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References
Stanzl-Tschegg S, Mayer H (eds) (2001) Proceedings of international conference on fatigue in the very high cycle range, Vienna, Austria
Sakai Y, Ochi Y (eds) (2004) Proceedings of 3rd international conference on very high cycle fatigue. Society of Materials Science, Kyoto
Allison JE, Jones JW, Larson JM, Ritchie RO (eds) (2007) Proceedings of 4th international conference on very high cycle fatigue. TMS Publications, Ann Arbor
Berger C, Christ H-J (eds) (2011) Proceedings of 5th international conference on very high cycle fatigue. DVM-Verlag, Berlin
Wang QY, Hong YS (eds) (2014) Proceedings of 6th international conference on very high cycle fatigue. CD-ROM, Chengdu
Zimmermann M, Christ H-J (eds) (2017) Proceedings of 7th international conference on very high cycle fatigue. Siegener Werkstoffkundliche Berichte, Siegen
Berger C, Pyttel B, Schwerdt D (2008) Beyond HCF—is there a fatigue limit? Materialwiss Werkstofftech 10(39):769–776
ASTM E 647-11 (2011) Standard method for measurement of fatigue crack growth rates. American Society for Testing and Materials (ASTM), Philadelphia
Tabernig B, Pippan R (2002) Determination of the length dependence of the threshold for fatigue crack propagation. Eng Fract Mech 69:899–907
Bach J, Höppel HW, Prell M, Göken M (2014) Crack initiation mechanisms in AA6082 fatigued in the VHCF regime. Int J Fatigue 60:23–27
DIN EN 573-3:2013-12, Aluminium und aluminiumlegierungen—chemische zusammensetzung und form von halbzeugen—teil 3: chemische zusammensetzung und erzeugnisformen (EN 573-3:2013)
Zaiken E, Ritchie RO (1985) Effects of microstructure on fatigue crack propagation and crack closure behavior in aluminium alloy 7150. Mater Sci Eng 70:151–160
Kirsten T, Bülbül F, Wicke M, Christ H-J, Brückner-Foit A, Zimmermann M (2018) Influence of microstructural discontinuities on the behaviour of long fatigue cracks in the VHCF regime for the aluminium alloys EN AW 6082 and EN AW 5083. In: Matec web of conference, vol 165, p 20005
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Kirsten, T. et al. (2019). Influence of Microstructural Inhomogeneities on the Fatigue Crack Growth Behavior Under Very Low Amplitudes for Two Different Aluminum Alloys. 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_39
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DOI: https://doi.org/10.1007/978-3-030-13980-3_39
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