材料期刊网

Effects of Finish Rolling Temperature on Microstructure and Mechanical Properties of FerriticRolled PAdded High Strength InterstitialFree Steel Sheets

GUO Weimin , WANG Zuocheng , LIU Sheng , WANG Xiebin

钢铁研究学报(英文版)

The steels were rolled at 3 different finishing temperatures. The mechanical properties were tested by tensile tests. The results show that as finish rolling temperature decreases from 620 to 560 ℃ in ferrite region, the deep drawability of ferriticrolled Padded high strength IF steels is improved, and r value rises from 114 to 137. Finish rolling temperature (FT) has less influence on other mechanical properties, such as yield strength, tensile strength and elongation. Microstructures of hot rolled and annealed steel sheets and precipitates of annealed steel sheets were also analyzed.

关键词: ferrite , high strength IF steel , deep drawability , rvalue