scholarly journals Effect of the Strain Kind on the Texture and Microstructure of Low-Alloyed Steel

2016 ◽  
Vol 2016 ◽  
pp. 1-8
Author(s):  
N. M. Shkatulyak ◽  
V. V. Usov ◽  
E. S. Savchuk ◽  
E. A. Dragomeretskaya ◽  
D. V. Bargan
Keyword(s):  
Cold Rolling ◽  
Crystallographic Texture ◽  
Rolling Direction ◽  
Rolling Texture ◽  
Alloyed Steel ◽  
Steel Rolling ◽  
Direction Transverse ◽  
Twist Extrusion ◽  
Mechanisms Of Formation ◽  
Low Alloyed Steel

Crystallographic texture and microstructure of low-alloyed steel after twist extrusion (TE) and subsequent cold rolling along and across the TE axis were studied. The double axial cylindrical texture with axes 110 and 100 parallel to the TE axis and the vortex-like microstructure are formed in the steel during the TE. The subsequent rolling of extruded steel along the TE axis promotes the forming of typical steel rolling texture as well as the microstructure with elongated grains in rolling direction. Typical steel rolling texture as well as the equiaxed microstructure is formed in extruded steel after rolling in the direction transverse to the TE axis. The mechanisms of formation of the texture are discussed.

scholarly journals Textures of Non-Oriented Electrical Steel Sheets Produced by Skew Cold Rolling and Annealing

Metals ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 17
Author(s):  
Youliang He ◽  
Erik J. Hilinski
Keyword(s):  
Cold Rolling ◽  
Rolling Direction ◽  
Rolling Texture ◽  
Deformation Mode ◽  
Formation Mechanisms ◽  
Cold Rolling And Annealing ◽  
Initial Texture ◽  
Skew Rolling ◽  
Skew Angles ◽  
Rolling Deformation

In order to investigate the effect of cold rolling deformation mode and initial texture on the final textures of non-oriented electrical steels, a special rolling technique, i.e., skew rolling, was utilized to cold reduce steels. This not only altered initial textures but also changed the rolling deformation mode from plane-strain compression (2D) to a more complicated 3D mode consisting of thickness reduction, strip elongation, strip width spread and bending. This 3D deformation induced significantly different cold-rolling textures from those observed with conventional rolling, especially for steels containing low (0.88 wt%) and medium (1.83 wt%) amounts of silicon at high skew angles (30° and 45°). The difference in cold-rolling texture was attributed to the change of initial texture and the high shear strain resulting from skew rolling. After annealing, significantly different recrystallization textures also formed, which did not show continuous <110>//RD (rolling direction) and <111>//ND (normal direction) fibers as commonly observed in conventionally rolled and annealed steels. At some skew angles (e.g., 15–30°), the desired <001>//ND texture was largely enhanced, while at other angles (e.g., 45°), this fiber was essentially unchanged. The formation mechanisms of the cold rolling and recrystallization textures were qualitatively discussed.

Effect of Formic Acid on Corrosion Behavior of STBA24 Low-Alloyed Steel and Its Weldment in Simulated Boiler Water Containing Chloride Ions

2020 ◽  
Vol 61 (9) ◽  
pp. 1775-1781
Author(s):  
Li-Bin Niu ◽  
Shoichi Kosaka ◽  
Masaki Yoshida ◽  
Yusuke Suetake ◽  
Kazuo Marugame
Keyword(s):  
Formic Acid ◽  
Corrosion Behavior ◽  
Chloride Ions ◽  
Alloyed Steel ◽  
Boiler Water ◽  
Low Alloyed Steel

Fast Salt Bath Heat Treatment for a Bainitic/Martensitic Low-Carbon Low-Alloyed Steel

2015 ◽  
Vol 46 (11) ◽  
pp. 5343-5349
Author(s):  
Julia Urbanec ◽  
Ari Saastamoinen ◽  
Seppo Kivivuori ◽  
Seppo Louhenkilpi
Keyword(s):  
Heat Treatment ◽  
Salt Bath ◽  
Alloyed Steel ◽  
Low Carbon ◽  
Low Alloyed Steel

Role of Deformation Twinning in Cold Rolling and Recrystallization of Titanium

2005 ◽  
Vol 495-497 ◽  
pp. 651-656 ◽  
Author(s):  
Y.B. Chun ◽  
S. Lee Semiatin ◽  
Sun Keun Hwang
Keyword(s):  
Heat Treatment ◽  
Cold Rolling ◽  
Texture Component ◽  
Recrystallization Texture ◽  
Rolling Texture ◽  
Mechanical Twinning ◽  
Treatment Temperature ◽  
Recrystallization Annealing ◽  
Cp Ti ◽  
Evolution Of Microstructure

The evolution of microstructure and texture during cold rolling and recrystallization annealing of commercial-purity Ti (CP-Ti) was established. Cold rolling to 40% reduction activated mechanical twinning- mostly > 3 2 11 < } 2 2 11 { compressive twins and > 1 1 10 < } 2 1 10 { tensile twins. The formation of twins resulted in an inhomogeneous microstructure, in which only the localized regions containing twins were refined and the regions deformed by slip remained coarse. The twinned grains, containing high stored energy and numerous high-angle grain boundaries, became the preferential sites of nucleation during subsequent recrystallization. During recrystallization heat treatment at 500~700°C, the cold-rolling texture (ϕ1=0°, Φ=35°, ϕ2=30°) diminished in intensity, whereas a recrystallization texture component (ϕ1=15°, Φ=35°, ϕ2=35°) appeared. The recrystallization heat treatment temperature affected the rate of recrystallization but not the texture characteristics per se. During the subsequent grain growth stage, the recrystallization texture component increased. This behavior was attributed to the growth of larger-than-average grains of this particular crystal orientation.The evolution of microstructure and texture during cold rolling and recrystallization annealing of commercial-purity Ti (CP-Ti) was established. Cold rolling to 40% reduction activated mechanical twinning- mostly > 3 2 11 < } 2 2 11 { compressive twins and > 1 1 10 < } 2 1 10 { tensile twins. The formation of twins resulted in an inhomogeneous microstructure, in which only the localized regions containing twins were refined and the regions deformed by slip remained coarse. The twinned grains, containing high stored energy and numerous high-angle grain boundaries, became the preferential sites of nucleation during subsequent recrystallization. During recrystallization heat treatment at 500~700°C, the cold-rolling texture (ϕ1=0°, Φ=35°, ϕ2=30°) diminished in intensity, whereas a recrystallization texture component (ϕ1=15°, Φ=35°, ϕ2=35°) appeared. The recrystallization heat treatment temperature affected the rate of recrystallization but not the texture characteristics per se. During the subsequent grain growth stage, the recrystallization texture component increased. This behavior was attributed to the growth of larger-than-average grains of this particular crystal orientation.

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