Abstract
The effect of controlled rolling and cooling on microstructure and mechanical properties of micro-alloyed cold heading steel 6AB-Ti and 35KB-Ti with diameter 6.5 mm was studied. The results showed that the controlled rolling and cooling process had a great effect on the microstructure and properties of 6AB-Ti than 35KB-Ti. For 6AB-Ti steel, the tensile strength value decreased from 460 to 360 MPa and the microstructure evolved from quasi-polygonal ferrite and pearlite to polygonal ferrite and pearlite when the finish rolling decreased from 920 to 850 °C (and the laying head temperature decreased from 900 to 800 °C). For 35KB-Ti steel, the tensile strength decreased from 630 to 610 MPa and the microstructure with ferrite net disappeared for controlled rolling and cooling process. The above phenomena are explained by the CCT curve of steel and the influence of boron and titanium on the phase transformation of steel.
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References
S.P. Ruan, A.M. Zhao, J.L. Chen et al., Study on energy saving cold heading steel wire rod containing boron. Steel Rolling 32(Supplement 1), 30–34 (2015)
S.P. Ruan, A.M. Zhao, M.Y. Guo et al., Effect of boron and titanium on microstructure and properties of low carbon Al-killed steel. Iron Steel 51(7), 71–75 (2016)
S.P. Ruan, A.M. Zhao, J. Cui et al., Continuous cooling transformation behavior of 10B33 boron micro alloyed medium carbon steel for cold heading. Heat Treat. Met. 41(9), 18–21 (2016)
N. Tsuji, Y. Matsubara, T. Sakai et al., Effect of boron addition on the microstructure of hot-deformed Ti-added interstitial free steel. ISIJ Int. 37(8), 797–806 (1997)
H. Hata, H. Yaguchi, M. Shimotsusa et al. Development of high quality wire rod through thermo mechanical control process. Kobe Steel Eng. Rep. 1, 29–32 (2000)
S.P. Ruan, L.J. Wang, J.L. Chen et al., Effect of control-rolling-cooling process on structure and properties of steel SCM435 rod coil. Spec. Steel 5, 45–47 (2016)
C. Camurri, C. Carrasco, I. Bello et al., Development of low carbon boron steel for wire drawing. Mater. Sci. Forum 539–543, 4238–4242 (2007)
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Ruan, S., Zhao, A., Wang, L., Han, G., Zhang, P. (2018). Effect of Controlled Rolling and Cooling on Microstructure and Properties of Cold Heading Steel Containing Boron and Titanium. In: Han, Y. (eds) Advances in Materials Processing. CMC 2017. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-13-0107-0_34
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DOI: https://doi.org/10.1007/978-981-13-0107-0_34
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