| abstract |
A powder of particles can include an aluminum alloy where the aluminum alloy is at least approximately eighty percent by weight of the powder; and one or more metals selected from a group consisting of alkali metals, alkaline earth metals, and basic metals having an atomic number equal to or greater than 31, where the one or more metals selected from the group total at least approximately two percent by weight of the powder; where each of the particles includes individual grains formed of a grain material that includes the aluminum alloy, where each of the particles includes grain boundary material that includes the one or more metals selected from the group, and where the grain boundary material bounds the individual grains. |