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CRACK-GROWTH KINETICS OF 7050-T73651 ALUMINUM-ALLOY UNDER CONSTANT LOAD AT 150-DEGREES-C
Date
1993-03-15
Author
SARIOGLU, F
ABACHI, P
DORUK, M
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Crack growth tests at 150-degrees-C under constant load conditions were performed on compact tension specimens of 7050-T73651 aluminium alloy. The d.c. potential drop method was employed to monitor crack lengths throughout the tests. Fracture mechanics parameters such as the stress intensity factor (K) and energy-rate line integral (C*) were used to establish correlation with the crack propagation rates. As a result of experiments it was found that crack growth rates (da/dt) versus K, over discrete ranges of rates, can be described as a power-law equation in the form da/dt= AK(n). The parameter C* appears to correlate well with the crack propagation rates through a single power law over a wide range of rates.
Subject Keywords
Mechanical Engineering
,
General Materials Science
,
Mechanics of Materials
URI
https://hdl.handle.net/11511/66604
Journal
JOURNAL OF MATERIALS SCIENCE
DOI
https://doi.org/10.1007/bf00363334
Collections
Department of Metallurgical and Materials Engineering, Article