纳米SiC颗粒增强AZ61镁基复合材料制备工艺的优化

Optimization of Preparing Technology for Nano SiC_p/AZ61 Magnesium Matrix Composites

采用高能超声方法制备了纳米SiC颗粒增强AZ61镁基复合材料。利用正交试验法研究了纳米SiC的含量、超声导入温度和超声作用时间等关键工艺参数对纳米SiCp/AZ61镁基复合材料力学性能的影响。试验结果表明,纳米SiC颗粒含量对复合材料的抗拉强度和伸长率的影响最显著。在本试验条件下,超声制备纳米SiC颗粒增强AZ61镁基复合材料的最佳工艺方案可优选为:纳米SiC颗粒含量为1%、超声导入温度为650℃、超声作用时间为15min。

SiC nano particles reinforced AZ61 magnesium matrix composites were fabricated by ultrasonic method. The technological parameters, such as the SiC nano particles content, ultrasonic treatment temperatures and times, were examined by using of orthogonal test. Experimental results show that SiC nano particles content has most remarkable effects on the mechanical properties of the composites. In the experimental conditions, the nano SiCp/AZ61 magnesium matrix composites with excellent performance can be prepared with 1 at.% SiC nano particles and ultrasonic treatment at 650 ℃ for 15 rain.