Cu-4Ag alloy cast rod billets were prepared by using the three-chamber vacuum cold vertical lead continuous casting equip-ment,and Cu-4Ag alloy microwires with different wire diameters were obtained by continuous cold drawing deformation.The yield strength and tensile strength of materials with different wire diameters were obtained by drawing tests.Based on the relationship between wire diam-eters and strength,the drawing limit prediction model for microwire was established.The results show that during the drawing process,the wire diameter of Cu-4Ag alloy microwire is closely related to the tensile strength,and there is significant size effect;the modified drawing limit model can accurately predict the drawing limit that Cu-4Ag alloy microwires with different wire diameters can reach.The data genera-ted by the drawing limit model was imported into MATLAB to construct the three-dimensional curved surface model,and it can more intui-tively analyze the drawing limit of materials.
维普
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