Failure Behavior of Anodized Coating-Magnesium Alloy Substrate Structures

Abstract:

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This work focuses on the damage mechanisms and the resulting failure behavior of structures made of anodized coatings on magnesium alloy substrates. The failure of anodized coatings of about 30µm thickness on AZ91D substrates was investigated under three-points bending loading with online scanning electron microscope (SEM) observations. The obtained SEM images show that void nucleation and crack initiation occurs mainly at sites near the coating-substrate interface, and the evolutionary microcracking damage diffuses from the interface to the coating surface and also to the bulk substrate with the increasing in loading.

Info:

Periodical:

Key Engineering Materials (Volumes 261-263)

Edited by:

Kikuo Kishimoto, Masanori Kikuchi, Tetsuo Shoji and Masumi Saka

Pages:

363-368

DOI:

10.4028/www.scientific.net/KEM.261-263.363

Citation:

X. S. Wang et al., "Failure Behavior of Anodized Coating-Magnesium Alloy Substrate Structures", Key Engineering Materials, Vols. 261-263, pp. 363-368, 2004

Online since:

April 2004

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Price:

$35.00

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