Metal material large-strain processing method based on multi-pair wheel rolling and equal channel corner extrusion
A technology of equal-channel corners and metal materials, which is applied in the field of cold processing of metal materials, can solve the problems of continuous production that is difficult to industrialize, difficult to achieve the same large strain in the cross-section, and small texture orientation control degree of deformed materials. The effect of reducing, reducing fracture, and increasing deformation
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Embodiment 1
[0022] Example 1: The blank is made of annealed industrial pure aluminum, wherein the rolling strain is 1.75 (80% of the pressing amount), and the ECAP strain is 0.8. After deformation processing, the dislocation density of the material is 0.13×10 14 m -2 , Yield strength increased by 60%, hardness increased by 46%.
Embodiment 2
[0023] Example 2: The billet is annealed 5052 aluminum, the rolling strain is 0.4 (the pressing amount is 50%), and the ECAP strain is 0.8. After deformation processing, the dislocation density of the material is 2.636×10 14 m -2 , Yield strength increased by 140%, hardness increased by 90%.
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