利用Gleeb-1500热模拟力学试验机对40%AlNp/LY12铝基复合材料进行高温压缩试验。研究表明,AlNp/LY12复合材料的高温压缩行为主要受变形温度、应变速率等的影响,其中以变形温度的影响最为显著;随变形温度的升高,变形抗力逐渐下降;随变形速率的增加,变形抗力呈上升趋势。在试验范围内,该复合材料高温压缩变形的最佳温度为500℃,且在应变速率为0.014 s-1时临界应变量最大。 High-temperature compression tests on 40% AlNp / LY12 aluminum matrix composites were carried out by Gleeb-1500 thermal simulation mechanics testing machine. The results show that the high temperature compression behavior of AlNp / LY12 composites is mainly affected by the deformation temperature and strain rate, and the deformation temperature is the most significant. With the increase of deformation temperature, the deformation resistance gradually decreases. With the increase of deformation rate, Deformation resistance is on the rise. Within the experimental range, the optimum temperature for compressive deformation of the composite under high temperature is 500 ℃, and the critical strain is the largest when the strain rate is 0.014 s-1.