A method of forming an aluminum alloy article by fusion processing, comprising: obtaining an aluminum alloy precursor material in solid state form, the aluminum alloy precursor material having a chemical composition, in weight % of the aluminum alloy precursor material, comprising: Si from 0.40 to 0.80%; Cu from 0.15 to 0.40%; Mg from 2.5% to 5.0%; Cr from 0.04 to 0.35%; Ti from 0.0 to 0.15%; optionally Boron from 0.001 to 0.05%; Fe from 0.0 to 0.7%; Mn from 0.0 to 0.15%; Zn from 0.0 to 0.005%; one or more other impurities from 0.0 to 0.05% for each of the one or more other impurities, wherein the total amount of the one or more other impurities is from 0.0 to 0.10%; and Al from 50% or greater and constituting the balance; exposing the aluminum alloy precursor material to at least one direct energy source sufficient to heat and liquefy the precursor material; forming a melt pool with the liquefied precursor material on a substrate, wherein the forming the melt pool with the liquefied precursor material is performed as the at least one direct energy source and/or the substrate move relative to each other in a travel direction; solidifying the melt pool to form the aluminum alloy article, the aluminum alloy article having a chemical composition, in weight % of the aluminum alloy forming the article, comprising: Si from 0.40 to 0.80%; Cu from 0.15 to 0.40%; Mg from 0.8 to 1.2%; Cr from 0.04 to 0.35%; Ti from 0.0 to 0.15%; Fe from 0.0 to 0.7%; Mn from 0.0 to 0.15%; Zn from 0.0 to 0.005%; one or more other impurities up to 0.05% for each of the one or more other impurities, wherein the total amount of the one or more other impurities is up to 0.15%; and Al from 50% or greater and constituting the balance. obtaining an aluminum alloy precursor material in solid state form, the aluminum alloy precursor material having a chemical composition, in weight % of the aluminum alloy precursor material, comprising: Si from 0.40 to 0.80%; Cu from 0.15 to 0.40%; Mg from 2.5% to 5.0%; Cr from 0.04 to 0.35%; Ti from 0.0 to 0.15%; optionally Boron from 0.001 to 0.05%; Fe from 0.0 to 0.7%; Mn from 0.0 to 0.15%; Zn from 0.0 to 0.005%; one or more other impurities from 0.0 to 0.05% for each of the one or more other impurities, wherein the total amount of the one or more other impurities is from 0.0 to 0.10%; and Al from 50% or greater and constituting the balance; Si from 0.40 to 0.80%; Cu from 0.15 to 0.40%; Mg from 2.5% to 5.0%; Cr from 0.04 to 0.35%; Ti from 0.0 to 0.15%; optionally Boron from 0.001 to 0.05%; Fe from 0.0 to 0.7%; Mn from 0.0 to 0.15%; Zn from 0.0 to 0.005%; one or more other impurities from 0.0 to 0.05% for each of the one or more other impurities, wherein the total amount of the one or more other impurities is from 0.0 to 0.10%; and Al from 50% or greater and constituting the balance; exposing the aluminum alloy precursor material to at least one direct energy source sufficient to heat and liquefy the precursor material; forming a melt pool with the liquefied precursor material on a substrate, wherein the forming the melt pool with the liquefied precursor material is performed as the at least one direct energy source and/or the substrate move relative to each other in a travel direction; solidifying the melt pool to form the aluminum alloy article, the aluminum alloy article having a chemical composition, in weight % of the aluminum alloy forming the article, comprising: Si from 0.40 to 0.80%; Cu from 0.15 to 0.40%; Mg from 0.8 to 1.2%; Cr from 0.04 to 0.35%; Ti from 0.0 to 0.15%; Fe from 0.0 to 0.7%; Mn from 0.0 to 0.15%; Zn from 0.0 to 0.005%; one or more other impurities up to 0.05% for each of the one or more other impurities, wherein the total amount of the one or more other impurities is up to 0.15%; and Al from 50% or greater and constituting the balance. Si from 0.40 to 0.80%; Cu from 0.15 to 0.40%; Mg from 0.8 to 1.2%; Cr from 0.04 to 0.35%; Ti from 0.0 to 0.15%; Fe from 0.0 to 0.7%; Mn from 0.0 to 0.15%; Zn from 0.0 to 0.005%; one or more other impurities up to 0.05% for each of the one or more other impurities, wherein the total amount of the one or more other impurities is up to 0.15%; and Al from 50% or greater and constituting the balance.