Influence of Microstructural Inhomogeneities on the Fatigue Crack Growth Behavior Under Very Low Amplitudes for Two Different Aluminum Alloys
Influence of Microstructural Inhomogeneities on the Fatigue Crack Growth Behavior Under Very Low Amplitudes for Two Different Aluminum Alloys
复制标题
两种不同铝合金极低振幅下微观结构不均匀性对疲劳裂纹扩展行为的影响
DOI:
10.1007/978-3-030-13980-3_39
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
M. Zimmermann
中科院分区:
文献类型:
--
作者:
T. Kirsten;M. Kuczyk;M. Wicke;A. Brückner-Foit;H.-J. Christ;M. Zimmermann
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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DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
T. Kirsten;F. Bülbül;M. Wicke;H. Christ;A. Brückner;M. Zimmermann
通讯作者:
M. Zimmermann
DOI:
--
发表时间:
1985
期刊:
影响因子:
--
作者:
E. Zaiken;R. Ritchie
通讯作者:
R. Ritchie
影响因子:
1.1
作者:
Berger, C.;Pyttel, B.;Schwerdt, D.
通讯作者:
Schwerdt, D.
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
S. Stanzl
通讯作者:
S. Stanzl
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
B. Tabernig;R. Pippan
通讯作者:
R. Pippan