The Optimization of Interlamellar Spacing in a Nanopearlitic Lead-Patented Hypoeutectoid Steel Wire

作者：Mohandesi J Aghazadeh^*; Saadatmand M

来源：Journal of Materials Engineering and Performance, 2011, 20(8): 1467-1473.

DOI：10.1007/s11665-010-9782-2

• atomic force microscopy
• finite element method
• interlamellar spacing
• nanopearlitic patented steel

In this study, in order to optimize the interlamellar spacing prior to drawing operation in a nanopearlitic lead patented hypoeutectoid steel wire, a model based on finite element method is presented to predict the optimum immersion time in a lead bath. A typical suitable immersion time for the wire with 1.8 mm diameter is about 10 s. The austenitizing and quenching temperature for a wire with diameter of 1.8 mm and composition of 0.72% C, to obtain the lowest interlamellar spacing (i.e., 29 nm), are 910 and 510 A degrees C, respectively. The hardness and the yield strength of the steel wire followed a linear relationship with the inverse square root of the interlamellar spacing (S (-1/2)). Pearlite interlamellar spacing obtained after patenting treatment, was decreased by increasing the amount of prior deformation.

• 出版日期2011-11