Laser　beam　welding　of　a　newly　developed　AA2060　aluminum-lithium　(Al-Li)　alloy　was　performed　with　AlSi12　filler　wire.　The　fusion　zone　(FZ)　consisted　of　dendritic　solidification　structure　with　the　LiAlSi　and　CuAl2　phases　and　a　small　quantity　of　Mg2Si　phase　at　the　dendritic　and　grain　boundaries,　reducing　the　precipitation　ability　in　the　interior　of　grains.　The　microhardness　was　decreased　in　the　FZ,　being　90-120　HV0.1,　compared　to　the　based　material　(BM),　being　152　HV0.1,　and　the　variation　was　consistent　with　local　strength　across　the　joint.　The　joint　transverse　tensile　strength　was　416　MPa　and　the　elongation　was　1.2%.　The　presence　of　grain　boundary　phases　caused　the　fracture　mode　varied　from　a　low-energy　intergranular　fracture　in　the　FZ　to　a　high-energy　transgranular　fracture　in　the　BM.　The　formation　of　LiAlSi　phases　in　the　weld　metal,　resulting　from　the　addition　of　Si,　helped　increase　the　tensile　strength　of　the　joints.　The　M2060　Al-Li　alloy　is　considered　weldable　due　to　the　over　80%　tensile　strength　of　BM　in　laser　beam　welding,　which　readily　meets　most　applications.　(C)　2016　Elsevier　B.V.　All　rights　reserved.