Identification of active slip systems in polycrystals by Slip Trace -- Modified Lattice Rotation Analysis (ST-MLRA)

TL;DR

The paper introduces ST-MLRA, a simple method to identify active slip systems in polycrystals using surface slip trace analysis and grain rotation data, demonstrated on a magnesium alloy.

Contribution

The paper presents a novel, straightforward technique combining slip trace analysis and lattice rotation to identify active slip systems in polycrystals.

Findings

Successfully applied to HCP Mg alloy

Enables identification of slip systems from surface data

Simple implementation for practical use

Abstract

A simple and versatile strategy, denominated Slip Trace - Modified Lattice Rotation Analysis (ST-MLRA), is presented to enable the identification of the active slip systems in polycrystalline alloys from surface information. The slip plane trace orientation is used to define the potential active slip planes while the actual slip direction within the active slip plane is obtained from the grain rotation, as indicated by the stretching of the trace of the grain orientation in the pole figure as a result of deformation. Examples of application of the strategy in a HCP Mg alloy are presented for illustration. They show that the strategy is simple to implement and allows to identify the active slip system(s) in each grain.