Microstructural Characteristics of High Rate Plastic Deformation in ElektronTM WE43 Magnesium Alloy

Report No. ARL-RP-363
Authors: Joseph Hamilton; Sarah T. Brennan; Yongho Sohn; Bruce Davis; Rick DeLorme; Kyu Cho
Date/Pages: April 2012; 12 pages
Abstract: High strain rate deformation of WE43 magnesium alloy was carried out by high velocity impacts, and the characteristics and mechanisms of microstructural damage were examined. Six samples were subjected to a variety of high velocity impact loadings that resulted in both partial and full damage. Optical, scanning and transmission electron microscopy analyses were performed in order to identify regions of shear localization. These regions were used to map, both quantitatively and qualitatively, the effects of deformation on the microstructure. Shear localization was observed in every sample, and its depth was measured. Evidence of shear localization was observed to a greater extent in samples with partial damage while fracturing was observed more frequently in samples with full damage.
Distribution: Approved for public release
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Last Update / Reviewed: April 1, 2012