Multirange fractal analysis of discontinuous microstructure change of In-40wt.%Sn melt
Fractal analysis based on results of high temperature X-ray diffraction experiment provides a general tool to study the temporal-spatial properties of particles in In-40wt.%Sn melt. Partially-overlapping multirange fractal structure is observed in In-40wt.%Sn melt, and as temperature decreases from 800 to 130 ℃℃, low fractal dimension was found to range between 2.000 and 2.669, high fractal dimension is still 3.000 without alteration. Moreover, low fractal dimension reveals a discontinuous change between 600 ℃ and 700 ℃. Fractal characteristics of In-40wt.%Sn melt were correlated with the evolution of microstructure. The discussion was made in detail. Multirange fractal model was proposed to calculate transition region curves of multirange fractals. The results show that values of simulation show good agreement with experimental values, the maximum error is less than 1.3%. From the analysis, the range of the transition region between two fractal regions is speculated to be related with structure properties of metal melts. In addition, ultrafine particle and its aggregation mechanism were used to analyze the fractal morphologies.
Yongzhi Zhou Haoran Geng Mei Li Chunjing Sun Zhiming Wang
School of Materials Science and Engineering, University of Jinan, 106 Jiwei Road, Jinan 250022, P R Shandong Transport Vocational College, 8 Weifang Country Road, Weifang 261206, P R China School of Materials Science and Engineering, Shandong University, 73 Jingshi Road, Jinan 250061, P R
国际会议
桂林
英文
1-6
2010-11-16（万方平台首次上网日期，不代表论文的发表时间）