To investigate the solid solution strengthening contributions of Ca and Sn, the UIUC team developed physics-based DFT models to simulate unit mechanisms at the dislocation level, which will then be used to support crystal plasticity models being developed by PNNL. The UF team worked to provide samples for experimental inputs and data for validation for the computational simulations. SEM and EDS performed on annealed samples showed evidence of a small amount of Mg2Ca and Mg2Sn phase around grain boundaries, respectively. However, no Mg2Ca and Mg2Sn particles were observed in grains after annealing (500°C/24 h). Eight sheets total, four as-rolled with 15 and 20%CW and four fully recrystallized, were shipped to PNNL for further investigation.