疲劳驾驶预警传感器用新型锻造铜基合金的组织和性能研究

Study on Microstructure and Properties of New-type Wrought Copper Based Alloy for Fatigue Driving Early Warning Sensor

在Cu-1.8Be合金中添加了稀土元素Y和纳米Ag,对疲劳驾驶预警传感器用新型铜基合金进行了锻造,并进行了显微组织、物相组成、织构、导电性能和力学性能的测试与分析。结果表明,该新型锻造铜基合金由Cu基体相和少量的Be_2Cu相、纳米Ag相组成,具有优异的导电性能和力学性能。与商业Cu-1.8Be铸造合金相比,该新型锻造铜基合金的织构最大值减小33%,电阻率减小43%,抗拉强度增加54%,屈服强度增加60%,伸长率从1.2%增至5.4%。

The rare earth element Y and nano Ag were added in.the Cu-1.8Be alloy. A new-type copper based alloy for the fatigue driving early warning sensors was forged. And the microstructure, phase composition, texture, electric conductivity and mechanical properties were tested and analyzed. The results show that the new-type forging copper-based alloy is composed of Cu matrix phase, a little of Be2Cu phase and nano Ag phase, which has excellent electric conductivity and mechanical properties. Compared with the commercial casting Cu-1.8Be alloy, the texture maximum value and resistively of the new-type forging copper-based alloy are decreased by 33% and 43%, respectively; the tensile strength and yield strength are increased by 54% and 60%, respectively; the elongation increases from 1.2% to 5.4%.