摘要
本文借助于分形研究了系列冲击条件下,冲击韧度a_k与冲击断裂表面分形维数D_F之间的关系,并讨论了冲击断裂表面分形维数与断裂性质之间的关系。试验结果表明,当测量码尺η=0.8436μm时,冲击韧度a_K值的对数与断裂表面分形维数成反比关系 1ga_k=8.988-6.4D_f断裂表面分形维数可以反映断裂性质的变化。
By means of fractal analysis, the present paper studied the relation between impact toughness aK and fractal dimension of fractured surfaces DF at series impact test, and discussed the relation between fractal dimension of fractured surfaces DF and fracture features. The experimental results show that there is a linear relation between logarithm values of impact toughness and fractal dimension of fractured surfaces DF when yardstick is 0.8436 μm:lgaK=8.988-6.4DFand fractal dimension of fractured surfaces DF can show the change of fracture features.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
1991年第3期69-72,共4页
Journal of Iron and Steel Research
关键词
分形维数
冲击韧性
断裂性质
金属
fractal dimension, yardstick, impact toughness, fracture feature
