论文部分内容阅读
用分形学研究了 Fe__3Al 基金属间化合物断裂表面的分形维数与温度、塑性及断裂机制之间的关系。结果表明,其拉伸塑性及断裂模式与分形维数 D_F 存在对应关系;其分形维数随温度变化的特征反映了塑性变化特征;且其 D_F 值随测量码尺范围的变化而变化,并分别与占主导地位的断裂机制或微观结构相联系。
The fractal dimension of fracture surface of Fe__3Al-based intermetallic compound has been studied by using the fractal theory to study the relationship between temperature, plasticity and fracture mechanism. The results show that the tensile plasticity and fracture mode are related to the fractal dimension D_F. The fractal dimension reflects the plastic change characteristics with the change of temperature. And the D_F value changes with the range of the measuring code, Linked to the dominant fracture mechanism or microstructure.