Hot　deformation　behavior　of　as-cast　BFe30-1-1　alloy　was　systematically　investigated　at　the　temperature　of　750-1000　℃　and　the　strain　rate　of　0.01-10　s-1.　The　effects　of　friction　and　adiabatic　on　the　flow　stress　were　analyzed.　The　stain-stress　curves　caused　by　frictional　and　adiabatic　effects　were　corrected.　The　corrected　curves　were　used　to　establish　the　Arrhenius　constitutive　equation,　so　as　to　the　processing　map　of　as-cast　BFe30-1-1　alloy　on　the　basis　of　dynamic　material　model.　The　microstructure　evolution　of　alloy　during　hot　deformation　was　investigated,　which　shows　that　the　flow-stress　increases　with　the　decrease　of　deformation　temperature　and　the　increase　of　strain　rate.　Friction　and　temperature　rise　can　influence　the　flow　stress　curves　of　alloys.　The　dynamic　recrystallization　occurs　during　the　hot　deformation.　The　average　relative　error　between　the　predicted　value　and　the　experimental　value　of　peak　stress　is　less　than　3.77%.　It　shows　that　the　constitutive　equation　can　accurately　predict　the　flow　stress　of　different　hot　deformation　conditions.　According　to　the　hot　processing　map　and　microstructural　analysis,　the　reasonable　range　of　thermoplastic　deformation　process　for　BFe30-1-1　copper-nickel　alloy　is　the　deformation　temperature　of　900-1000　℃　and　the　strain　rate　of　0.04　-　0.16　s-1.　And　more　dynamic　recrystallization　grains　of　the　alloy　can　be　obtained　at　this　deformation　condition.　©　2023　Beijing　Institute　of　Aeronautical　Materials　(BIAM).　All　rights　reserved.