Dynamic Fracture Behavior of Magnesium Alloy under Biaxial Stress

Abstract:

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In this study, dynamic behaviors of cracks under dynamic biaxial stress were investigated. We conducted static and dynamic loading fracture experiments on a magnesium alloy (AZ31B-O) under equitable and inequitable biaxial stress by using a hydraulic high-speed biaxial experimental machine. We processed specimens as the cross type with a crack. Different kinds of cracks were defined by their crack angles. We analyzed the results using the caustic method. The experiments revealed some important findings; there is a negative relation between the fracture toughness value and the plate thickness of the magnesium alloy sheet specimen; the fracture toughness value decreases when the crack has an angle different from the loading direction; the fracture toughness value decreases significantly under inequitable biaxial stress.

Info:

Periodical:

Materials Science Forum (Volumes 488-489)

Edited by:

W.Ke, E.H.Han, Y.F.Han, K.Kainer and A.A.Luo

Pages:

853-858

DOI:

10.4028/www.scientific.net/MSF.488-489.853

Citation:

D. Y. Hwang and A. Shimamoto, "Dynamic Fracture Behavior of Magnesium Alloy under Biaxial Stress", Materials Science Forum, Vols. 488-489, pp. 853-858, 2005

Online since:

July 2005

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Price:

$35.00

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