Quantitative description of morphology characteristics of inclusions in steel and its relationships with floating velocity
GUO Luo-fang, LI Hong, WANG Yao
(1.State Key Laboratory of Advanced Metallurgy, University of Science and
Technology Beijing, Beijing 100083, China;
2.School of Metallurgical and Ecological Engineering, University of Science and
Technology Beijing, Beijing 100083, China)
Abstract：Analysis in this article was based on fractal theory. The calculation method for fractal dimensions and hydrodynamic diameter of inclusions with irregular morphology were discussed by examples, and through water mould experiments, the reliability and accuracy was verified for quantitative description of the floating velocity of aggregates with irregular morphology by the fractal dimension and hydrodynamic diameter. The results showed that: the fractal dimension and hydrodynamic diameter of non-metallic inclusions with irregular morphology in steel could be accurately calculated by covering-method with single pixel and box dimension for slope method after their scanning electron micrograph and metallographic image had been processed by computer; the floating velocity of aggregates calculated by fractal dimension and hydrodynamic diameter was consistent with the experimental values; it was accurate and feasible to quantitatively describe the inclusions with irregular morphology by fractal dimension and aerodynamic diameter.
郭洛方，李 宏*，王 耀 . 钢中夹杂物形貌特征的定量描述方法及其与上浮速度的关系[J]. 冶金分析, 2012, 32(9): 1-6.
GUO Luo-fang, LI Hong, WANG Yao. Quantitative description of morphology characteristics of inclusions in steel and its relationships with floating velocity. , 2012, 32(9): 1-6.
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