【摘要】 采用真空熔炼制备的CuCr25合金,在低应变速率下冷轧变形,研究了组织及性能变化。结果表明:CuCr25合金的电导率随着轧制变形程度的增大,开始略有上升,然后不断下降,经过一定量的大变形后,电导率又有上升;CuCr25合金的硬度不断上升,CuCr25合金硬度的上升主要是由于Cu基硬度的上升;经过大量的冷轧变形后,Cr相成纤维状和条带状,并有空洞生成;CuCr25合金在室温下具有超塑性。更多还原

【Abstract】 CuCr25 alloy is prepared by vacuum induction melting and is rolled at low strain rate. The experimental results show that the electrical conductivity first increases, then it decreases gradually with the deformation. After deforming to certain degree, the conductivity increases again and Cr phases are deformed to ribbons or fibrous. The work hardening of the copper matrix leads to the hardness increase of the CuCr25 alloy. CuCr25 alloy has a superplasticity at room temperature.更多还原