【摘要】 用SiC炭化硅强化金属基复合材料制作的不同切口的拉伸试样进行了拉伸试验并对拉伸延性断面进行了微小空穴的三维形状测试.详细分析了在不同应力三维度下、空穴聚合时空穴几何形状的变化.为准确模拟金属基复合材料及其零部件在多向外载荷下的损伤过程,判断延性损伤机理提供了科学依据.更多还原

【Abstract】 The tensile tests are conducted and the void shape is measured on ductile fracture surface by changing the notch radius of tensile test specimens, which is made by the SiC reinforced metal matrix composite material. The effect of void configuration and coalescence under the different stresstriaxiality condition is analyzed. These experimental results could be used to simulate ductile damage correctly in the process of the metal matrix material and machine elements under the multidimensional loads, and propose a reasonable strength evaluation method and scientific basis for estimating the ductile damage mechanism.更多还原