Our new study in Acta Materialia combines atom probe tomography and atomistic modeling to uncover solute co-segregation mechanisms at low-angle grain boundaries (LAGBs) in a Mg-Al-Zn-Ca alloy. We reveal how calcium, zinc, and aluminum interact with dislocation arrays, with calcium preferentially segregating to tensile regions and zinc/aluminum to compressive zones. These insights provide a foundation for designing advanced magnesium alloys with enhanced mechanical properties through targeted grain boundary engineering. Read the full article.
