Improved Fatigue Resistance of 7050 Thick Plate Aluminum Through Minimization of Microporosity

JB Deschapelles; RC Rice

doi:10.1520/STP12342S

SYMPOSIA PAPER Published: 01 January 1998

STP12342S

Improved Fatigue Resistance of 7050 Thick Plate Aluminum Through Minimization of Microporosity

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This paper illustrates the substantial fatigue life improvements that have been achieved with 7050 heavy gauge plate over the past two decades. The load control fatigue resistance of 7050-T7451 thick plate is shown to decrease with increasing plate thickness at both the plate quarter-thickness (T/4) and mid-thickness (T/2). These reductions in fatigue resistance are shown to be most substantial at the plate mid-thickness, and they are shown to be directly related to the maximum size of remaining micropores.

Author Information

Deschapelles, JB

Century Aluminum Corporation, Ravenswood, West Virginia

Rice, RC

Structural Integrity Projects Office, Advanced Manufacturing Technology, Battelle, Columbus, Ohio

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Details

Developed by Committee: E08

Pages: 34–71

DOI: 10.1520/STP12342S

ISBN-EB: 978-0-8031-5387-5

ISBN-13: 978-0-8031-2485-1

Improved Fatigue Resistance of 7050 Thick Plate Aluminum Through Minimization of Microporosity

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