Activity of pyramidal Ⅰ and Ⅱ slip in Mg alloys as revealed by texture development

摘要

Highlights•Texture evolution is analyzed to determine whether pyramidal I or pyramidal II slip activates.•Micromechanics-based EPSC model is used to calculate reorientations in an Mg-4%Li alloy.•Single-slip-mode model is developed to identify crystals favoring pyramidal I and II slip.•Simulations and measurements indicate that pyramidal I dominates over pyramidal II slip.•Rolling texture components that distinguish pyramidal I and II slip activity are identified.AbstractDue to the geometry of the hexagonal close-packed (HCP) lattice, there are two types of pyramidal ce:bold>c+a{101¯1}〈112¯3¯〉or type I and{1¯1¯22}〈112¯3〉or type II in HCP crystalline materials. Here we use crystal plasticity to examine the importance of crystallographic slip by pyramidal ce:bold>c+ac+ac+a