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With the rapid development of the microelectronics industry , the increasing demand for high-performance copper alloys . The Cu-Co - and Cu-Cr -based alloy having a high strength and high electrical conductivity, is the potential of the high performance copper alloys . The Cu-Co - based , and Cu -Cr -based alloy phase diagram of basic theoretical information in order to more effectively improve the alloy performance and optimizing the alloy composition , it is necessary to grasp . This thesis two ways determined by experiment and thermodynamic calculation of Cu -Co - X (X: Cr , Mo, Nb , Si , V , W ) and Cu -Cr -X ( x : Nb , Si , Ta, , V ) ternary phase equilibrium . Its main research work as follows: (1) Experimental determination of the Cu-Co-X (X: Cr, Mo, Nb, Si, V, W) ternary Department of Cu-Co -side at 800 ° C , 900 ° C , 1000 ° C , 1100 ° C when the phase equilibrium . (2) Experimental determination of the Cu-Cr-X (X: Nb, Si, Ta, V) ternary Cu-Cr side 800 ° C , 900 ° C , 1000 ° C , 1100 ° C when the phase equilibria, and Cu-Cr -Nb ternary system at 1100 ° C , 1200 ° C , 1300 ° C full ingredients within Phase Equilibria . (3) using the results of the experimental determination of the experimental information reported in the literature , the literature has been reported , Cu -Co , Cu -Cr , Co-Cr , Cu -Nb and Cr -Nb of five binary system phase diagram of optimization results, Cu-Co-Cr and Cu-Cr-Nb ternary phase equilibrium thermodynamic optimization calculations . ( 4) to study the alloying elements Cu-Co - Cu-Cr -based alloys in the liquid phase two phase separation and coagulation of tissue morphology , and its mechanism explained by thermodynamic calculation . The results of this thesis has laid the foundation to establish the thermodynamic database Multicomponent Cu alloy , provides an important theoretical guidance material designed for high-performance copper-based alloy .
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