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Mechanistic understanding on the contribution to high strength in a three-directional severe plastic deformed
1Interdisciplinary Structural and Functional Materials Science and Engineering Research Group, Department of Biomedical Engineering, Department of Mechanical, Robotics and Industrial Engineering, Lawrence Technological University, 21000 West Ten Mile Road, Southfield, MI, 48075, USA.
Abstract:
The objective of the study described here is to elucidate grain refinement and precipitation that contributed to high strength in a three-directional (x-, y-, and z-axis) compressive severe plastic deformation of a biodegradable magnesium alloy. The study of the alloy by electron back scatter diffraction (EBSD) in a scanning electron microscope and transmission electron microscopy underscored that dynamic recrystallization and dynamic precipitation mechanisms occurred during processing such that an ultrafine/fine-grained structure with random orientation of grains and high density of nanoscale precipitates were obtained, contributing to high strain hardening rate.
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