TY - JOUR
T1 - Fatigue Characteristics of Plain and Notched Specimens of SiC-Whisker-reinforced Aluminum Alloy in Comparison with Aluminum Alloy
AU - Noguchi, Hiroshi
AU - Nisitani, Hironobu
AU - Kim, Yun Hae
AU - Nishizawa, Akio
PY - 1992
Y1 - 1992
N2 - In this paper, rotating-bending fatigue tests of the SiC-whisker-reinforced 6061-T6 aluminum alloy and 6061-T6 aluminum alloy made by powder metallurgy were carried out to investigate the fatigue characteristics of plain and notched specimens at room temperature. The fatigue mechanisms in both materials were clarified through successive surface observations using the plastic replica method. In the case of the SiC-whisker-reinforced composites, there are whisker rich and poor zones and the fatigue crack is nucleated from the end of whiskers near the boundary. On the other hand, in the case of the aluminum alloy, the fatigue crack is nucleated from defects and propagates by shear. Moreover, the results were discussed based on linear notch mechanics.
AB - In this paper, rotating-bending fatigue tests of the SiC-whisker-reinforced 6061-T6 aluminum alloy and 6061-T6 aluminum alloy made by powder metallurgy were carried out to investigate the fatigue characteristics of plain and notched specimens at room temperature. The fatigue mechanisms in both materials were clarified through successive surface observations using the plastic replica method. In the case of the SiC-whisker-reinforced composites, there are whisker rich and poor zones and the fatigue crack is nucleated from the end of whiskers near the boundary. On the other hand, in the case of the aluminum alloy, the fatigue crack is nucleated from defects and propagates by shear. Moreover, the results were discussed based on linear notch mechanics.
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U2 - 10.1299/kikaia.58.1765
DO - 10.1299/kikaia.58.1765
M3 - Article
AN - SCOPUS:84996305178
SN - 0387-5008
VL - 58
SP - 1765
EP - 1771
JO - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
JF - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
IS - 554
ER -