Scr Casting And Rolling Copper Alloy Microstructure And Properties

Copper alloy wire is an important premises of national electric railway,and it's better than the pure copper wire on the mechanical properties.Copper alloy wire has been extensively studied in many countries to meet the requirements of speeding on electric railway,also to improve it's usefull life and reliability.This paper analyses Cu-Ag,Cu-Sn and Cu-Mg alloy wires,what are offered by Yunnan Copper Co.,Ltd and made by SCR continous casting and rolling process,and find out the relationship between the Microscope and the mechanical of Cu alloy wire.It also provides a theoretical basis for the industrialization of the alloy wire.Ingot, wirebar and finished product of the copper alloy are analysed by Metalloscope, Scanning Electron Microscope(SEM) and Transmission Electron Microscope(TEM),and Microstructure and properties of copper alloy fabricated by SCR progress are analysed the effect of process. The wirebar is fabricated by rolling the ingot,and the finished product is fabricated by cold-drawing the wirebar at room temperature.In the processes,rolling and cold-drawing refine the grain,and the defects are also refined and homogenized. Rolling and cold-drawing are beneficial to control the stability of mechanical properties of copper alloy.Combined with molecular dynamics simulations,the results show that the atoms of the second element are uniformly distributed in the copper alloy,and the analysis of test results is proved accurately.The results of the simulations indicate that the parameters of the process are feasible,and prove the theory is correct. The artificial neural network prediction is used on analyzing relationship between the process and the performance,and the mechanical and the electrical properties are simulated and predicted by the content of the second element,then we get the satisfactory target of the prediction.The results provide a theoretical guidance for the industrialization of the alloy,and help to save the consumption on resources of human and material.The model of metal solidification based on cellular automata is use to observe the formation of copper alloy,and used MFC framework to program in VC++platform,and choice rightly the model with the temperature field,concentration field,nucleation and grain length during solidification.The results show the formation process of solidification of Cu-0.35%Sn alloy ingot.and establish the relationship between the macro-organizational formation and the microstructure evolution.