TY - JOUR
T1 - Fatigue and fracture behaviour of structural Al-alloys up to very long life regimes
AU - Wang, Q. Y.
AU - Kawagoishi, N.
AU - Chen, Q.
N1 - Funding Information:
The authors are grateful to the support of National Science Foundation of China through Grant NSFC-10372064 and Specialized Research Fund for the Doctoral Program of Chinese Higher Education through Grant 20030610001.
PY - 2006/11
Y1 - 2006/11
N2 - Very long life fatigue and near-threshold fatigue crack growth behaviour of 7075 and 6061 Al-alloys in T6 condition were investigated using accelerated fatigue testing at 19.5 kHz on a piezoelectric machine. Significant interfacial voids were observed in the two Al-alloys during crack initiation and early fatigue crack growth process. Fatigue failure in Al-alloys could be ascribed to: the formation of a number of fatigue voids, their growth and coalescence, and the subsequent formation and propagation of macroscopic cracks. Moreover, fatigue crack growth rates of small cracks in these alloys were found to be greater than those of large cracks for the same stress intensity factor range.
AB - Very long life fatigue and near-threshold fatigue crack growth behaviour of 7075 and 6061 Al-alloys in T6 condition were investigated using accelerated fatigue testing at 19.5 kHz on a piezoelectric machine. Significant interfacial voids were observed in the two Al-alloys during crack initiation and early fatigue crack growth process. Fatigue failure in Al-alloys could be ascribed to: the formation of a number of fatigue voids, their growth and coalescence, and the subsequent formation and propagation of macroscopic cracks. Moreover, fatigue crack growth rates of small cracks in these alloys were found to be greater than those of large cracks for the same stress intensity factor range.
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U2 - 10.1016/j.ijfatigue.2005.09.017
DO - 10.1016/j.ijfatigue.2005.09.017
M3 - Article
AN - SCOPUS:33746327465
VL - 28
SP - 1572
EP - 1576
JO - International Journal of Fatigue
JF - International Journal of Fatigue
SN - 0142-1123
IS - 11
ER -