scholarly journals Growth Rate and Phase Composition of Oxide Scales during Hot Rolling of Low Carbon Steel

2004 ◽  
Vol 44 (9) ◽  
pp. 1554-1559 ◽  
Author(s):  
Vladimir V. Basabe ◽  
Jerzy A. Szpunar
Keyword(s):  
Growth Rate ◽  
Phase Composition ◽  
Carbon Steel ◽  
Hot Rolling ◽  
Low Carbon Steel ◽  
Oxide Scales ◽  
Low Carbon

Texture of Oxide Scales during Hot Rolling of Low Carbon Steel

2005 ◽  
Vol 495-497 ◽  
pp. 339-344 ◽  
Author(s):  
Vladimir V. Basabe ◽  
Jerzy A. Szpunar
Keyword(s):  
Carbon Steel ◽  
Oxide Scale ◽  
Hot Rolling ◽  
Low Carbon Steel ◽  
Cube Texture ◽  
Experimental Results ◽  
Oxide Scales ◽  
Low Carbon ◽  
Air Velocity ◽  
Temperature Range

The textures of oxide scales grown on low carbon steel in air over the temperature range 850-950°C were investigated. The low carbon steel was oxidized with the air velocity of 4.2 cm/s for 10 s in order to approximate the formation of tertiary scales in hot rolling. At 850°C, the wüstite texture and magnetite texture are weak with no dominant components. For the temperatures of 900 and 950°C, the wüstite and magnetite phases have a cube texture {001}<100>. The experimental results indicate that during hot rolling in the g region, the texture of the oxide scale is cubic and when rolling in the a region, the texture of the oxide scale is weak with no dominant components.

scholarly journals Effect of water flow and depth on fatigue crack growth rate of underwater wet welded low carbon steel SS400

2021 ◽  
Vol 11 (1) ◽  
pp. 329-338 ◽  
Author(s):  
E. Surojo ◽  
J. Anindito ◽  
F. Paundra ◽  
A. R. Prabowo ◽  
E. P. Budiana ◽  
...  
Keyword(s):  
Growth Rate ◽  
Fatigue Crack ◽  
Carbon Steel ◽  
Crack Growth Rate ◽  
Crack Growth ◽  
Water Flow ◽  
Water Depth ◽  
Water Flow Rate ◽  
Low Carbon Steel ◽  
Low Carbon

Abstract Underwater wet welding (UWW) is widely used in repair of offshore constructions and underwater pipelines by the shielded metal arc welding (SMAW) method. They are subjected the dynamic load due to sea water flow. In this condition, they can experience the fatigue failure. This study was aimed to determine the effect of water flow speed (0 m/s, 1 m/s, and 2 m/s) and water depth (2.5 m and 5 m) on the crack growth rate of underwater wet welded low carbon steel SS400. Underwater wet welding processes were conducted using E6013 electrode (RB26) with a diameter of 4 mm, type of negative electrode polarity and constant electric current and welding speed of 90 A and 1.5 mm/s respectively. In air welding process was also conducted for comparison. Compared to in air welded joint, underwater wet welded joints have more weld defects including porosity, incomplete penetration and irregular surface. Fatigue crack growth rate of underwater wet welded joints will decrease as water depth increases and water flow rate decreases. It is represented by Paris's constant, where specimens in air welding, 2.5 m and 5 m water depth have average Paris's constant of 8.16, 7.54 and 5.56 respectively. The increasing water depth will cause the formation of Acicular Ferrite structure which has high fatigue crack resistance. The higher the water flow rate, the higher the welding defects, thereby reducing the fatigue crack resistance.

Structure and phase composition of cobalt rich coating prepared by laser cladding on low carbon steel

1993 ◽  
Vol 9 (2) ◽  
pp. 172-175 ◽  
Author(s):  
N. Pizúrová ◽  
J. Komurka ◽  
M. Svoboda ◽  
O. Schneeweiss
Keyword(s):  
Phase Composition ◽  
Carbon Steel ◽  
Laser Cladding ◽  
Low Carbon Steel ◽  
Low Carbon

scholarly journals Hot Rolling Texture of Low Carbon Steel

1966 ◽  
Vol 52 (8) ◽  
pp. 1171-1179 ◽  
Author(s):  
Haruo KUBOTERA ◽  
Kazuhide NAKAOKA ◽  
Takashi NAGAMINE
Keyword(s):  
Carbon Steel ◽  
Hot Rolling ◽  
Low Carbon Steel ◽  
Rolling Texture ◽  
Low Carbon

On the Decrease of Fatigue Limit Due to Small Prestrain

1992 ◽  
Vol 114 (3) ◽  
pp. 317-322 ◽  
Author(s):  
Y. Nagase ◽  
S. Suzuki
Keyword(s):  
Growth Rate ◽  
Carbon Steel ◽  
Fatigue Limit ◽  
Surface Crack ◽  
Fatigue Behavior ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Small Surface ◽  
Bending Tests ◽  
Rotating Bending

Fatigue behavior of plain specimens of low carbon steel subjected to small tensile prestrain is investigated through rotating bending tests and the mechanism of the decrease of fatigue limit due to the prestrain is discussed. It is found that 3 percent prestraining causes the acceleration of both slip and crack initiations, and increases the growth rate of a small surface crack of less than 0.3 mm. It also decreases the fatigue limit. If prestrained material is aged, the fatigue limit increases. These effects of the small prestrain are explained based on the unpinning of locked dislocations due to the prestrain.

SEM Studies on the Microstructure and Phase Composition Distribution in Cr3C2 + TiC Claddings on Low-Carbon Steel

2020 ◽  
Vol 303 ◽  
pp. 59-66
Author(s):  
Konstantin V. Ivanov ◽  
Vladimir E. Ovcharenko
Keyword(s):  
Electron Microscopy ◽  
Phase Composition ◽  
Carbon Steel ◽  
Structural Parameters ◽  
Low Carbon Steel ◽  
Relativistic Energy ◽  
Low Carbon ◽  
Composition Distribution ◽  
X Ray ◽  
Scanning Electron

Using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX) we studied the distribution of structural parameters, phase composition and alloying elements concentration across the coatings obtained by cladding of chromium and titanium carbides mixture on low-carbon steel. The beam of relativistic energy electrons extracted into the atmosphere was used to form the coatings. The homogeneity in the allying elements distribution is shown to be defined by the lifetime of the melt bath while the phase composition distribution depends on the thickness of the melt layer. Both above parameters are determined by the density of the entered energy.

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