Study on the Hot Ductility of Low Carbon Steel Q345B Bloom

Ai Xi; Sun Yanhui; Ceng Yanan; Liu Ruining; Liu Yong

doi:10.7513/j.issn.1004-7638.2014.04.020

Volume 35 Issue 4

Aug. 2014

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Ai Xi, Sun Yanhui, Ceng Yanan, Liu Ruining, Liu Yong. Study on the Hot Ductility of Low Carbon Steel Q345B Bloom[J]. IRON STEEL VANADIUM TITANIUM, 2014, 35(4): 103-106. doi: 10.7513/j.issn.1004-7638.2014.04.020

Citation:

Ai Xi, Sun Yanhui, Ceng Yanan, Liu Ruining, Liu Yong. Study on the Hot Ductility of Low Carbon Steel Q345B Bloom[J]. IRON STEEL VANADIUM TITANIUM, 2014, 35(4): 103-106. doi: 10.7513/j.issn.1004-7638.2014.04.020

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Study on the Hot Ductility of Low Carbon Steel Q345B Bloom

doi: 10.7513/j.issn.1004-7638.2014.04.020

1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2. Shijiazhuang Iron&Steel Company, Ltd., HeBei Iron&Steel Group, Shijiazhuang 050031, Hebei, China

Received Date: 2013-07-29
Available Online: 2023-12-04
Publish Date: 2014-08-28

Abstract

Abstract

Hot ductility of low carbon steel Q345 B bloom was tested by Gleeble 1500 thermo-mechanical simulator at the strain rate of 1×10^-4s^-1and 1×10^-3s^-1respectively.The results indicated that there were two brittle zones at the temperature ranging from 600~T_L℃ when the strain rate was at 1×10^-4s^-1,that is,high temperature brittle zone (1 217~T_L℃) and low temperature brittle zone (600~930℃).When the strain rate was at 1×10^-3s^-1,however,there was only low temperature brittle zone (600~915℃) at the temperature ranging from 600~T_L℃.The main factors influencing hot ductility of this steel were S segregation,strain rate,proeutectoid ferrite as well as precipitation of fine AlN particles.
- low carbon steel,
- ductility,
- strain rate,
- precipitates