论文部分内容阅读
采用固态高温压缩试验、高温金相观察等试验手段，实验研究了Ａｌ２Ｏ３ｓｆ／ＬＹ１２复合材料在高温下的流动应力与塑性变形行为。结果表明，随着变形温度的提高，由于基体的变形抗力以及基体对阻碍其变形的纤维的剪切作用力大大降低，纤维不易产生断裂并易于以偏转的形式调整自己的方位来适应基体的塑性流动，从而显著降低复合材料的流动应力和大大提高其塑性和变形能力，有利于复合材料的成形。
The flow stress and plastic deformation behavior of Al2O3sf / LY12 composites at high temperature were experimentally studied by means of solid state high temperature compression test and high temperature metallographic observation. The results show that with the increase of the deformation temperature, the deformation resistance of the matrix and the matrix greatly reduce the shear force of the fibers that hinder its deformation, the fibers are not easily broken and the orientation of the fibers can be easily adjusted by deflection to adapt to the plasticity of the matrix Flow, thereby significantly reducing the flow stress of the composite material and greatly improve their plasticity and deformation capacity, is conducive to the formation of composite materials.