Increase of Ductility Level in Z-Direction of Low-Carbon Steel Plates up to 150 mm Thick for Critical Welded Structures

Metallurgist ◽  
2015 ◽  
Vol 58 (9-10) ◽  
pp. 777-783 ◽  
Author(s):  
E. A. Goli-Oglu ◽  
Yu. A. Bokachev
Keyword(s):  
Carbon Steel ◽  
Low Carbon Steel ◽  
Steel Plates ◽  
Low Carbon ◽  
Welded Structures

scholarly journals Development of friction stir welding technology of low-carbon steel plates

2020 ◽  
Vol 1546 ◽  
pp. 012057
Author(s):  
I K Chenykh ◽  
E V Vasil’ev ◽  
A N Abakumov ◽  
N V Zakharova ◽  
K A Sinogina
Keyword(s):  
Friction Stir Welding ◽  
Carbon Steel ◽  
Low Carbon Steel ◽  
Steel Plates ◽  
Low Carbon ◽  
Friction Stir ◽  
Welding Technology

Nucleation Effect of Ca-Oxysulfide Inclusions of Low Carbon Steel in Heat Affected Zone by Welding

2018 ◽  
Vol 941 ◽  
pp. 130-134
Author(s):  
Yusuke Terazawa ◽  
Katsuyuki Ichimiya ◽  
Kazukuni Hase
Keyword(s):  
Carbon Steel ◽  
Heat Affected Zone ◽  
Heat Input ◽  
Fine Particles ◽  
Low Carbon Steel ◽  
Lattice Misfit ◽  
Polygonal Ferrite ◽  
Steel Plates ◽  
Low Carbon ◽  
Nucleation Effect

In order to achieve excellent toughness of heat affected zone (HAZ) of low carbon steel plates by welding, several microstructure control techniques using fine particles have been developed. In particular, Ca-oxysulfide inclusions have been used in a lot of steel plate products, because they are thermally stable even in near the fusion line of weld joint and they have grain refining effect in HAZ. In cases where heat input is large (>100kJ/cm) and microstructure of HAZ mainly consists of polygonal ferrite, it has been clarified that Ca-oxysulfide inclusions act as nucleation sites of polygonal ferrite in HAZ during the cooling process after welding. However, in cases where heat input is medium (≈50kJ/cm) and microstructure of HAZ mainly consists of bainite, nucleation effect of Ca-oxysulfide inclusions and that of mechanism have not been clarified. This study investigated the nucleation effect of Ca-oxysulfide inclusions in medium heat input welding by in-situ laser microscope observation and the lattice misfit between Fe-matrix and Ca-oxysulfide inclusions.

Analysis and prevention of side cracking phenomenon occurring during hot rolling of thick low-carbon steel plates

2005 ◽  
Vol 402 (1-2) ◽  
pp. 177-187 ◽  
Author(s):  
Byoungchul Hwang ◽  
Han Sang Lee ◽  
Yang Gon Kim ◽  
Sunghak Lee
Keyword(s):  
Carbon Steel ◽  
Hot Rolling ◽  
Low Carbon Steel ◽  
Steel Plates ◽  
Low Carbon
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