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主要通过等通道角径挤压(ECAP)以Bc的变形方式制备出超细晶Cu-Cr-Zr合金,研究了形变热处理对Cu-Cr-Zr合金显微组织、力学性能和电导率的影响。结果表明:8道次ECAP变形后Cu-Cr-Zr合金的晶粒呈等轴晶状,晶粒细化至200 nm,经过430℃/3 h的时效处理后,Cu-Cr-Zr合金8道次的抗拉强度和导电率达到优良的匹配,其中抗拉强度为614MPa,导电率达到80%IACS,而且颈缩时伸长率为26%,这显著改善了Cu-Cr-Zr的综合性能。
The ultrafine-grained Cu-Cr-Zr alloy was prepared by means of equal channel angular extrusion (ECAP) with Bc. The effect of the deformation heat treatment on the microstructure, mechanical properties and electrical conductivity of Cu-Cr-Zr alloy . The results show that the grain size of Cu-Cr-Zr alloy after ECAP deformation is equiaxed and decreases to 200 nm after ECAP deformation. After aging treatment at 430 ℃ for 3 h, the Cu-Cr-Zr alloy 8 The tensile and electrical conductivity of the passes achieved an excellent match, with a tensile strength of 614 MPa, an electrical conductivity of 80% IACS, and an elongation at neck reduction of 26%, which significantly improved the Cu-Cr-Zr composite performance.