Fractal Characteristics of Primary Phase Morphology in Semisolid A356 Alloy

Abstract:

Semisolid A356 alloy was prepared by low superheat pouring and slightly electro- magnetic stirring(LSPSES). The fractal dimensions of primary phase morphology in semisolid A356 alloy were researched by the calculating program written to calculate the fractal dimensions of box-counting in the image of primary phase morphology in semisolid A356 alloy. The results indicated that the primary phase morphology in the alloy was characterized by fractal dimension, and the morphology obtained by the different processing parameters had the different fractal dimension. The morphology at the different position of ingot had the different fractal dimensions, which reflected the effect of solidified conditions at different position in the same ingot on the morphology in the alloy. Solidification of the alloy was a course of change in fractal dimension.

• Periodical: Advanced Materials Research (Volumes 535-537)
• Pages: 936-940
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.535-537.936
• Online since: June 2012
• Authors: Zheng Liu, Xiao Mei Liu
• Keywords: A356 Aluminum Alloy, Fractal, Primary Phase Morphology, Semi-Solid

References

[1] Z. Fan: Int. Mater. Rev. Vol. 47 (2002), p.49

[2] K. Hisatsune, Y. Takuma, Y. Tanaka: Journal of Materials Science Vol. 33 (1998), p.4783

[3] Q. Zhang, P. Li, K. M. Xue: The Chinese J. of Nonferrous Metals Vol. 17 (2007), p.1149

[4] R. S. Qin, Z. Fan: Mater Sci Tech. Vol. 17 (2001), p.1149

[5] Z. Fan, J. Y. Chen: Mater. Sci. Tech. Vol. 18 (2002), p.258

[6] Z. Liu, W. M. Mao, Z. D. Zhao: Chinese J. of Mater Research Vol. 20 (2006); p.125

[7] Z. Liu, W. M. Mao, Z. D. Zhao: Trans. Nonferrous Metals Soc. of China Vol. 18 (2008), p.573

[8] Z. Liu, F. B. Yu: The Chinese J. of Nonferrous Metals Vol. 19 (2009), p.228

[9] R. Jayaganthan, K. Mohankumar, V. N. Sekhar: Materials Letters Vol. 60 (2006), p.1089

[10] P. Li, K. M. Xue: The Chinese J. of Nonferrous Metals Vol. 19 (2009), p.1019

[11] Y. Hangai, S. Kitahara: Materials and Design Vol. 30 (2009), p.1169

[12] B. B. Mandelbrot: The Fractal Geometry Nature (W H. Free-Man, New York, 1982).