The　corrosive　wear　resistance　of　copper-bearing　HHCCI　was　tested　through　experiments　and　HRTEM,　combined　with　first-principles　calculations　to　study　the　atomic　structure,　interface　fracture　work,　thermodynamic　stability,　electronic　structure　and　bonding　structure　of　six　Fe3Cr4C3(01　1‾　0)/γ-Fe(101)　interface　models　with　different　termination　methods.　The　HRTEM　results　show　that　the　interface　formed　by　(01　1‾　0)　of　M7C3-type　carbide　and　(101)　of　the　austenite　matrix　is　a　coherent　interface.　The　first　principles　calculation　results　show　that　the　interface　formed　by　the　Fe3Cr4C3(01　1‾　0)-Cr　termination　model　and　the　γ-Fe　(101)-2　termination　model　has　the　highest　interface　bonding　strength.　The　Fe-end/7Fe-2　interface　model　is　the　most　stable.　Both　the　interfacial　chemical　energy　and　the　interfacial　elastic　energy　will　affect　the　overall　thermodynamic　stability　of　the　Fe3Cr4C3(01　1‾　0)/γ-Fe　(101)　interface.　The　fracture　work　of　Fe3Cr4C3(01　1‾　0)　and　γ-Fe　(101)　is　greater　than　the　corresponding　interface　adhesion　work.　Moreover,　the　fracture　work　on　each　terminal　end　of　M7C3　along　the　(01　1‾　0)　surface　is　higher　than　that　on　each　terminal　end　of　γ-Fe　along　the　(101)　surface.　The　failure　of　HHCCI　during　corrosive　wear　may　mainly　occur　in　the　interface　area　or　the　side　close　to　the　γ-Fe　matrix.　The　chemical　bonds　in　the　Fe-end/7Fe　interface　are　mainly　Fe-Fe　metal　bonds,　Fe-Cr　metal　bonds　and　some　Fe-C　polar　covalent　bonds.　The　chemical　bonds　in　the　Cr-end/7Fe　interface　are　mainly　Cr-Fe　metal　bonds　and　some　Cr-C　polar　covalent　bonds.　The　chemical　bonds　in　the　C-end/7Fe　interface　are　mainly　composed　of　Cr-Fe　metal　bonds,　C-Fe　polar　covalent　bonds　and　part　of　C-Cr　polar　covalent　bonds,　as　a　result,　each　interface　exhibits　different　corrosive　wear　resistance　potentials.　©　2024