(合肥工業(yè)大學 材料科學與工程學院， 合肥230009)
摘 要:
關鍵字: Ti-15-3合金；熱變形；再結晶組織；分形
Ti-15-3 alloy after hot deformation
（School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China）
Abstract:The fractal theory was applied to analyze the recrystallized microstructure of Ti-15-3 alloy after hot deformation and solution treatment. Slit Island Method and Box Counting Method were used to calculate the fractal dimension of grains. The influence of processing parameters on fractal dimension and grain size was studied. The results show that the shapes of recrystallized grain boundaries are self-similar. The fractal dimension of grain boundaries increases with increasing deformation degree and strain rate whereas decreases with increasing deformation temperature. It might provide a new method for quantified study on irregular hot deformation microstructure.
Key words: Ti-15-3 alloy; hot deformation; recrystallized microstructure; fractal
