Determination of Fatigue-Crack Initiation and Propagation in a Magnesium Alloy

Robert Clapper; J. Watz

doi:10.1520/STP19619570008

SYMPOSIA PAPER Published: 23 August 2016

STP19619570008

Determination of Fatigue-Crack Initiation and Propagation in a Magnesium Alloy

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Rotating-beam fatigue tests were carried out on AZ63A-T4 magnesium alloy to determine the initiation and propagation characteristics of a fatigue crack. An electrical-resistance method for measuring cracks nondestructively was developed and is described. No relationship was apparent between life before crack initiation and life after initiation. The fit of the data with Head's formula predicting crack length as a linear function of the number of stress cycles is discussed.

Author Information

Clapper, Robert, B.

Design Section, Metallurgical Laboratory, The Dow Chemical Co., Midland, Mich., US

Watz, J., A.

Design Section, Metallurgical Laboratory, The Dow Chemical Co., Midland, Mich., US

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Details

Developed by Committee: E08

Pages: 111–122

DOI: 10.1520/STP19619570008

ISBN-EB: 978-0-8031-6976-0

ISBN-13: 978-0-8031-6545-8

Determination of Fatigue-Crack Initiation and Propagation in a Magnesium Alloy

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