Strength mechanisms and tunability in Al-Ce-Mg ternary alloys enabled by additive manufacturing

•DED with multiple feedstock powders enables large composition ranges of potential AM alloys to be rapidly synthesized.•Microhardness measurements show relatively good agreement with predicted strengths obtained from the different strengthening models.•The microhardness measurements show good agreement with the ultimate tensile stress measured for the bulk samples synthesized by DED.•Solid solution hardening and Hall-Petch (based on cell size) are the major mechanisms controlling the alloy strength for the composition range we examined.