| abstract |
The disclosed technology relates generally to consumable electrode welding wires, and more particularly to consumable electrode welding wires having a core-shell structure, wherein the core comprises aluminum. In one aspect, the welding wire includes a sheath having a steel composition and a core surrounded by the sheath. The core comprises aluminum (Al) in a concentration between about 3% and about 20% by weight based on the total weight of the welding wire, wherein the Al is in elemental form or alloyed with different metal elements. The disclosed technology also relates to welding methods and systems adapted for use with an aluminum-containing electrode wire. |