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对Cu-0.23%A12O3弥散强化铜合金在超低温变形和室温变形过程中的显微组织与织构演变进行研究。结果表明:Cu-A12O3弥散强化铜合金在热挤压后形成黄铜织构Brass{011}?211?和立方织构Cube{100}?100?;合金在室温变形后主要形成Brass{011}?211?织构和Goss{011}?100?织构;合金在超低温变形后主要形成黄铜织构Brass{011}?211?、高斯织构Goss{011}?100?和剪切织构S{123}?634?。在室温变形过程中,决定织构类型的主要因素则仅是Al2O3纳米粒子钉扎效应产生的对位错交滑移的抑制作用。而Cu-A12O3弥散强化铜合金在超低温变形过程中,决定织构类型的主要因素包括超低温和Al2O3纳米粒子钉扎效应二者共同产生的对位错交滑移的抑制作用。
The microstructure and texture evolution of Cu-0.23% A12O3 dispersion strengthened copper alloy during ultra-low temperature deformation and room temperature deformation were studied. The results show that Brass {011}? 211? And cubic texture Cube {100}? 100 alloy are formed after Cu-A12O3 dispersion strengthened copper alloy is formed by hot extrusion. The texture of the Goss {011}} 100 and the Goss {011} 100 texture are mainly formed by Brass {011}? 211 ?, Goss {011} S {123}? 634 ?. During the deformation process at room temperature, the main factor determining the texture type is only the inhibitory effect on the slip dislocation and slip caused by the pinning effect of Al2O3 nanoparticles. However, the main factors that determine the texture type of Cu-Al 2 O 3 dispersion-strengthened Cu alloy during ultra-low temperature deformation include the inhibition of dislocation cross-slip caused by both ultra-low temperature and the pinning effect of Al 2 O 3 nanoparticles.