INFLUENCE OF TIN ON THE HOT DUCTILITY OF A LOW-CARBON STEEL
来源期刊：Acta Metallurgica Sinica2003年第6期
论文作者：J.Jia S.H.Song A.M.Guo D.D.Shen J.Liu Z.X.Yuan
Key words：hot ductility; non-equilibrium segregation; steel; grain boundary; impurity;
Abstract: 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.
J.Jia1，S.H.Song1，A.M.Guo2，D.D.Shen1，J.Liu1，Z.X.Yuan1
(1.School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China;
2.Research Institute of Wuhan Iron & Steel Company, Wuhan 430080, China)
Abstract: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.
Key words:hot ductility; non-equilibrium segregation; steel; grain boundary; impurity;
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