Dey, Swapna and Das, S K and Basumallick, A and Chattoraj, I (2010) The Effect of pitting on fatigue lives of peak-aged and overaged 7075 aluminum alloys. Metallurgical and Materials Transactions A , 41A . pp. 3297-3307.
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Fatigue lives at high peak stresses for peak-aged (T6) and overaged (T73) 7075 aluminum alloy were compared in the uncorroded and precorroded (pitted) states. Absolute fatigue lives of T73 samples were much higher than that of T6 in the virgin as well as precorroded condition, but the normalized life of T73 was less than that of T6, indicating an intrinsic crack initiation resistance in the former, borne out by fractography, which showed that fatigue cracks almost always initiated at pits for T73 but not for T6. The various crack initiation methodologies observed and the effect of pitting on fatigue lives in the two aging conditions are discussed.
|Uncontrolled Keywords:||Pitting; Fatigue Lives; 7075 Aluminum Alloys|
|Divisions:||Business Development and Monitoring|
|Deposited By:||INVALID USER|
|Deposited On:||04 Nov 2010 10:47|
|Last Modified:||21 Sep 2012 10:58|
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