系列冲击断口的分形分析  

FRACTAL ANALYSIS OF SERIES IMPACT FRACTURE IN STEELS

作　　者：苏辉[1] 张玉贵[1] 阎振棨 

机构地区：[1]东北工学院

出　　处：《钢铁研究学报》1991年第3期69-72,共4页Journal of Iron and Steel Research

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.

关 键 词：分形维数 冲击韧性 断裂性质 金属 

分 类 号：TG111.91[金属学及工艺—物理冶金]