INFLUENCE OF TIN ON THE HOT DUCTILITY OF A LOW-CARBON STEEL

金属学报(英文版), 2003, 16(6): 478-482.

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1.School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China

2.School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China

3.Research Institute of Wuhan Iron & Steel Company, Wuhan 430080, China

4.School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China

5.School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China

6.School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China

基金项目: 湖北省自然科学基金(2000J018)

INFLUENCE OF TIN ON THE HOT DUCTILITY OF A LOW-CARBON STEEL

Keywords： hot ductility

The influence of tin on the hot ductility of a 0. 15wt%C steel is investigated using a continuous-casting thermal simulator with three cooling rates. Tin can apparently deteriorate the hot ductility of the steel. Non-equilibrium grain boundary segregation of tin occurs during cooling and plays an important role in reducing the hot ductility of the steel. There is a critical cooling rate for the Sn segregation being between 5 and 20K/s.

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INFLUENCE OF TIN ON THE HOT DUCTILITY OF A LOW-CARBON STEEL

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