TY - GEN
T1 - Analysis of small fatigue crack in Al-Mg-Si aluminum alloy
AU - Shikama, Takahiro
AU - Yoshihara, Shinji
AU - Takahashi, Yoshimasa
AU - Noguchi, Hiroshi
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2014
Y1 - 2014
N2 - In general, aluminum alloy does not exhibit distinct fatigue limit (knee point) in the S-N diagram. The growth of a small fatigue crack of precipitation-hardened Al-Mg-Si system alloy (6061-T6) was investigated to clarify the mechanism of non-appearance of distinct fatigue limit (knee point) in the S-N diagram. The small crack was analysed in detail by replica method, scanning electron microscope (SEM), and Electron Back Scatter Diffraction Patterns (EBSD). On the other hand, the existence of distinct fatigue limit (knee point) of new developed aluminum alloy by adding excess Mg to the 6061 alloy was found. In this study, the resistance of small crack growth of the developed alloy was compared with standard 6061 alloy. It was revealed that the resistance of crack growth of new developed alloy was higher than that of standard 6061 alloy in short crack region (l<1.0 mm).
AB - In general, aluminum alloy does not exhibit distinct fatigue limit (knee point) in the S-N diagram. The growth of a small fatigue crack of precipitation-hardened Al-Mg-Si system alloy (6061-T6) was investigated to clarify the mechanism of non-appearance of distinct fatigue limit (knee point) in the S-N diagram. The small crack was analysed in detail by replica method, scanning electron microscope (SEM), and Electron Back Scatter Diffraction Patterns (EBSD). On the other hand, the existence of distinct fatigue limit (knee point) of new developed aluminum alloy by adding excess Mg to the 6061 alloy was found. In this study, the resistance of small crack growth of the developed alloy was compared with standard 6061 alloy. It was revealed that the resistance of crack growth of new developed alloy was higher than that of standard 6061 alloy in short crack region (l<1.0 mm).
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U2 - 10.4028/www.scientific.net/MSF.794-796.313
DO - 10.4028/www.scientific.net/MSF.794-796.313
M3 - Conference contribution
AN - SCOPUS:84904395581
SN - 9783038351207
T3 - Materials Science Forum
SP - 313
EP - 318
BT - Aluminium Alloys, ICAA 2014
A2 - Marthinsen, Knut
A2 - Holmedal, Bjørn
A2 - Li, Yanjun
PB - Trans Tech Publications Ltd
T2 - 14th International Conference on Aluminium Alloys, ICAA 2014
Y2 - 15 June 2014 through 19 June 2014
ER -