Plastic anisotropy and the role of non-basal slip in magnesium alloy AZ31B

The texture and anisotropy of magnesium–zinc–rare earth alloy sheets

http://li.mit.edu/Stuff/RHW/Upload/07-01_Lou_XY_Hardening_evolution_paper.pdf

Hardening evolution of AZ31B Mg sheet

Role of {10–12} twinning characteristics in the deformation behavior of a polycrystalline magnesium alloy

Orthotropic yield criterion for hexagonal closed packed metals

The grain size dependence of the tensile properties and the deformation mechanisms responsible for those properties are examined for Mg alloy, AZ31B, sheet. Specifically, the Hall–Petch effect and strain anisotropy ( r -value) are characterized experimentally, and interpreted using polycrystal plasticity modeling. {1 0 . 2} extension twins, {1 0 . 1} contraction twins, and so-called “double-twins” are observed via microscopy and diffraction-based techniques, and the amount of twinning is found to increase with increasing grain size. For the sheet texture and tensile loading condition examined, {1 0 . 2} extension twinning is not expected, yet the polycrystal plasticity model predicts the observed behavior, including this ‘anomalous’ tensile twinning. The analysis shows that the Hall–Petch strength dependence, of the polycrystal as a whole, is primarily determined by the grain size dependence of the strength of the prismatic slip systems.

Ozgur Duygulu

Papers

Plastic anisotropy and the role of non-basal slip in magnesium alloy AZ31B

Grain size effects on the tensile properties and deformation mechanisms of a magnesium alloy, AZ31B, sheet

Effect of grain size on prismatic slip in Mg-3Al-1Zn alloy

A Mechanistic Understanding of the Formability of Magnesium: Examining the Role of Temperature on the Deformation Mechanisms

Nanosized CaP-silk fibroin-PCL-PEG-PCL/PCL based bilayer membranes for guided bone regeneration