scholarly journals Microstructural Refinement and Precipitation Behavior of Low Carbon Steel Produced by Compact Strip Production

2008 ◽  
Vol 48 (10) ◽  
pp. 1451-1456 ◽  
Author(s):  
Haiyan Wang ◽  
Huiping Ren ◽  
Zili Jin ◽  
Shuqing Xing
Keyword(s):  
Carbon Steel ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Precipitation Behavior ◽  
Microstructural Refinement ◽  
Compact Strip Production ◽  
Strip Production

Effect of Rare Earth Elements on Corrosion Behavior of Low Carbon Steel in CSP

2011 ◽  
Vol 311-313 ◽  
pp. 835-840
Author(s):  
Tao Li ◽  
Meng Qin ◽  
Zi Li Jin ◽  
Hui Ping Ren
Keyword(s):  
Rare Earth ◽  
Carbon Steel ◽  
Rare Earth Elements ◽  
Corrosion Current Density ◽  
Low Carbon Steel ◽  
Corrosion Current ◽  
Low Carbon ◽  
Compact Strip Production ◽  
Re Elements ◽  
Strip Production

Effects of rare earth elements (RE) on modification of inclusions, the corrosion dynamic laws and the electrochemical properties of low carbon steel in Compact strip production (CSP) technology have been investigated with SEM, EDS and polarization curve measurements. The results show that the RE elements play an important role on the morphology and type control of inclusions and also reduce their size in low carbon steel. The corrosion is mitigated due to relatively compact corrosion products and the dispersion spherical RE oxides and/or oxy-sulfides inclusions with the addition of RE. Meanwhile, the electrochemical measurements show that the corrosion current density of low carbon steel with RE is lower than that of steel without RE. The corrosion resistance is improved to a certain extent by RE.

Effect of Rare Earth on Microstructure and Impact Toughness of Low Carbon Steel Based on Compact Strip Production Process

2011 ◽  
Vol 189-193 ◽  
pp. 1753-1756 ◽  
Author(s):  
Hai Yan Wang ◽  
Hui Ping Ren ◽  
Zi Li Jin ◽  
Cui Zong
Keyword(s):  
Rare Earth ◽  
Carbon Steel ◽  
Impact Toughness ◽  
Acicular Ferrite ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Compact Strip Production ◽  
Hot Rolled ◽  
Strip Production

The effect of rare earth (RE) on microstructure and impact toughness of hot rolled low carbon structure steel based on the Compact strip production (CSP) process was investigated in this work. Scan electron microscope (SEM) were employed to characterize the microstructure and analyze the fracture surface. Moreover, hot compression experiments were also adopted on the Gleeble-1500 hot simulator as well. The results indicate that acicular ferrite and/or ultrafine ferrite morphologies can be induced when an appropriate amount of rare earth added into the low carbon steel, which possessed the satisfied strength and toughness behaviors. Compared with commercial low carbon structural steels, the additions of RE can improve dynamic recrystallization critical strain of low carbon structural steel as well. In addition, the role of RE on the formation of these acicular ferrite morphologies has been investigated.

scholarly journals Precipitation Behavior of Magnetite in Oxide Scale during Cooling of Microalloyed Low Carbon Steel

2012 ◽  
Vol 572 ◽  
pp. 249-254 ◽  
Author(s):  
Xiang Long Yu ◽  
Zheng Yi Jiang ◽  
Dai Jun Yang ◽  
Dong Bin Wei ◽  
Quan Yang
Keyword(s):  
Carbon Steel ◽  
Oxide Scale ◽  
Steel Substrate ◽  
Low Carbon Steel ◽  
Precipitation Process ◽  
Low Carbon ◽  
Precipitation Behavior ◽  
Magnetite Particles ◽  
And Migration ◽  
The Stability

Precipitation behavior of magnetite particles in the thermal grown oxide scale during isothermal cooling of microalloyed low carbon steel was studied using scanning electron microscopy (SEM) and thin film X-ray. The oxide scale was generated from Gleeble 3500 Thermal Mechanical Simulator connected with a humid air generator, to simulate 550 and 450C isothermal treatments. Several types of magnetite precipitates were observed during different cooling processes with respect to the possible mechanisms of precipitation have been discussed. It is found that magnetite particles is as a result of pro-eutectoid precipitation from oxygen-rich wustite, and also as a product of the partial decomposition of wustite during the cooling process due to change of oxygen concentration and migration of iron ions. Furthermore, microalloyed elements in steel reduce the stability of wustite thereby facilitate the precipitation process, whose products of multi-phase oxide finally determine the adhesive strength of oxide scale and steel substrate.

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