The structure and mechanical properties of tough-pitch copper are studied after alternating elastoplastic deformation (bending). It is shown that alternating bending of a 3-mm-thick strip of tough-pitch copper raises the microhardness and produces a gradient of its values, i.e., the microhardness is minimum in the middle (with respect to the thickness) part of the strip and maximum near its surfaces. After the first pass of alternating bending the conventional yield strength of the strip increases by a factor of 1.5 without degradation of the elongation. The structural factors affecting the variation of mechanical properties of tough-pitch copper under alternating bending are determined.

研究了交替弹塑性变形（弯曲）后韧铜的组织和力学性能。结果表明，3 毫米厚的韧铜带的交替弯曲提高了​​显微硬度并产生了其值的梯度，即显微硬度在带的中间（相对于厚度）部分最小并且在其表面附近最大。在第一次交替弯曲后，带材的常规屈服强度增加了 1.5 倍，而伸长率没有降低。确定了影响韧铜在交替弯曲下力学性能变化的结构因素。