Research of Ti2AlC/TiAl(Nb, B) Composites Based on Multi-fractal Spectrum
Spark plasma sintering (SPS) technology was used in-situ to fabricate the Ti2AlC/TiAl (Nb, B) composites. And the composites were treated by rapid heat treatment. which had many advantages, such as heating-up quickly, short holding time and relatively slow cooling. The hidden relationship between images could be reflected by Multi-fractal spectrum, which also could show irregularity apparently. In this paper, the SEM images which fabricated after rapid heat treatment were researched by multifractals. And the parameter was calculated by MATLAB through anglicizing the multi-fractal spectrum theory. There was only small fluctuate between ln χ q(r) and lnr when r=0.00625, and ln χ q(r) and lnr had well linear relationship in spite of the value of q. After the rapid heat treatment at T=1403 K, the correlation coefficient between τ (q) and q reached 99.99%. The trend of D (q) and q turned to be gently, and the fracture appeared uniformity, and these SEM images were single fractures. τ (q) and q show nonlinear relationship in q ∈-3,-1, and there was one observe steep.The clock shape relationship between the α and f(α) revealed good symmetry of spectrum, wider spectral width, uneven distribution of the fracture, multi-fractal feature clearly, and obvious characteristic of multi-fractal.
Ming Wen Yunlong Yue Haitao Zhang Yang Li
School of Materials Science and Engineering, University of Jinan, 250022 P.R.China School of Chemistry and Chemical Engineering, University of Jinan, 250022 P.R.China
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）