In　this　study,　we　demonstrate　the　successful　brazing　and　superior　mechanical　performance　of　laser　brazed　Inconel　(R)　718　using　a　Ni-Mn-Fe-Co-Cu　high　entropy　alloy　filler　metal　with　a　nominal　Ni:Cu:Co:Fe:Mn　molar　ratio　of　1:1:1:0.25:1.75.　A　maximum　220　MPa　shear　strength　is　achieved.　The　high　entropy　alloy　experiences　the　hardness　increases　3-4　times　after　brazing.　If　the　brazing　temperature　is　higher　than　1200　degrees　C,　the　bonding　strength　suffers　due　to　excessivediffusion　between　the　base　metal　and　the　filler　metal.　The　hardness　behavior　is　attributed　to　a　combination　of　the　cocktail　effect　and　lattice　distortion　induced　by　brazing.　(C)　2017　Elsevier　B.V.　All　rights　reserved.