Effect of Rolling Temperature, Reduction and Alloying Additions on the Texture of Warm Rolled Steels

2005 ◽  
Vol 495-497 ◽  
pp. 501-506 ◽  
Author(s):  
M. Sánchez-Araiza ◽  
Stéphane Godet ◽  
John J. Jonas
Keyword(s):  
Cold Rolling ◽  
Heating Rate ◽  
Warm Rolling ◽  
Carbon Steels ◽  
Rolling Temperature ◽  
Rolling Reduction ◽  
Low Carbon ◽  
Cold Rolling Reduction ◽  
Noticeable Improvement ◽  
Rolling Temperatures

The effect of warm and cold rolling parameters on the development of annealing textures was studied in two low carbon steels containing additions of chromium. Two warm rolling temperatures (640 and 700°C) were employed together with a reduction of 65%. The effects of an additional cold rolling reduction of 40% and of decreasing the heating rate during annealing were also studied. The ND fiber, <111>//ND, of the recrystallization texture was strengthened as the warm rolling temperature was decreased. However, all the warm rolled steels contained a retained RD fiber, <110>//RD. A noticeable improvement in both the continuity and intensity of the ND fiber was obtained when the sample was submitted to an additional 40% cold rolling reduction. The ND fiber was even more continuous and intense when a low heating rate was utilized, yielding r-values of 1.1 and 1.3 for the warm rolled and warm plus cold rolled samples, respectively.

scholarly journals Texture in Cold Rolled and Magnetically Aged Fe–Mo–Ni–C Alloys

1998 ◽  
Vol 31 (1-2) ◽  
pp. 97-107 ◽  
Author(s):  
H. F. G. Abreu ◽  
J. R. Teodósio ◽  
C. S. Da Costa Viana
Keyword(s):  
Cold Rolling ◽  
Shear Bands ◽  
Orientation Distribution ◽  
Carbon Steels ◽  
Distribution Functions ◽  
Rolling Reduction ◽  
Low Carbon ◽  
Cold Rolling Reduction ◽  
Texture Change ◽  
Cold Rolled

The texture change due to the increase of cold rolling reduction in Fe-Mo-Ni-C alloys is described. Orientation Distribution Functions (ODF) for samples cold rolled 80%, 90%, 97% and 99% are shown and discussed. Below 90% cold rolling reduction, the texture in these alloys is similar to that of cold rolled low carbon steels. Above 90% cold rolling reduction, a decrease in the component {001}〈110〉 is observed and the texture becomes weaker probably due to the development of shear bands. Magnetic age-annealing at 610°C for 1 h does not recrystallize completely these alloys. Samples cold rolled above 90% (97% and 99%) present an increase in the {001}〈110〉 component, this being responsible for a corresponding increase in the magnetic anisotropy of these alloys.

Cold Rolling and Annealing Microstructures and Textures of Low Carbon Steels

2010 ◽  
Vol 654-656 ◽  
pp. 214-217
Author(s):  
Marwan Almojil ◽  
Pete S. Bate
Keyword(s):  
Cold Rolling ◽  
Volume Fraction ◽  
Hsla Steel ◽  
Nucleation Site ◽  
Carbon Steels ◽  
Rolling Reduction ◽  
Low Carbon ◽  
Electron Backscattered Diffraction ◽  
Cold Rolling And Annealing ◽  
Fine Pearlite

The development of crystallographic textures of IF and HSLA steels after 20, 50, 70 and 90% cold rolling reductions and subsequent recrystallisation have been investigated using Electron Backscattered Diffraction (EBSD). The HSLA steel was initially processed to give a volume fraction of about 0.2 of fine pearlite colonies, which acted as mechanically hard particles. Both cold rolling and recrystallisation textures are shown to be largely dependent on the rolling reduction for both steels. With increasing rolling reduction, the texture shows gradual intensification of α and γ fibre components. Although PSN was the dominant nucleation site in the HSLA steel during annealing, the α and γ fibres also exist in the recrystallisation textures, but with lower density.

Effect of Coiling Temperature and Cold Rolling Reduction on Planar Anisotropy of Ti-Alloyed Low Carbon Steel

2014 ◽  
Vol 576 ◽  
pp. 161-165
Author(s):  
Gong Ting Zhang ◽  
Zhi Wang Zheng ◽  
Jun Chang
Keyword(s):  
Carbon Steel ◽  
Cold Rolling ◽  
Rolling Direction ◽  
Low Carbon Steel ◽  
Rolling Reduction ◽  
Low Carbon ◽  
Coiling Temperature ◽  
Planar Anisotropy ◽  
Cold Rolling Reduction ◽  
Anisotropy Index

The effects of coiling temperature and cold rolling reduction on planar anisotropy of Ti-alloyed low carbon steel were investigated. The results show that as the coiling temperature increases from 509°C to 633°C, the strength and elongation have little change, and the planar anisotropy trends to decrease. When coiling at 580°C to 640°C, the value of planar anisotropy index (△r) can be reduced to no more than 0.15. As the total cold rolling reduction increasing from 55% to 85%, the plastic strain ratio values (r-values) perpendicular to rolling direction increase firstly, then decrease; the change regulation of rolling direction is reverse, and the values of 45°direction nearly have no change. And the planar anisotropy can reach 0.07 as cold rolling at 75%.

scholarly journals Effect of Cold Rolling Reduction on r-value of Nb and B-added Extra Low-carbon Steel for Welded Cans

2016 ◽  
Vol 102 (1) ◽  
pp. 40-46 ◽  
Author(s):  
Masaki Tada ◽  
Yusuke Nakagawa ◽  
Katsumi Kojima ◽  
Hiroki Nakamaru
Keyword(s):  
Carbon Steel ◽  
Cold Rolling ◽  
Low Carbon Steel ◽  
Rolling Reduction ◽  
Low Carbon ◽  
Cold Rolling Reduction ◽  
R Value

scholarly journals Twinning Behavior in Cold-Rolling Ultra-Thin Grain-Oriented Silicon Steel

Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 187
Author(s):  
Bo Zhang ◽  
Li Meng ◽  
Guang Ma ◽  
Ning Zhang ◽  
Guobao Li ◽  
...  
Keyword(s):  
Cold Rolling ◽  
Rolling Process ◽  
Silicon Steel ◽  
Mechanical Work ◽  
Area Fraction ◽  
Raw Material ◽  
Rolling Reduction ◽  
Cold Rolling Reduction ◽  
Schmid Factor ◽  
Twinning System

Twinning behaviors in grains during cold rolling have been systematically studied in preparing ultra-thin grain-oriented silicon steel (UTGO) using a commercial glassless grain-oriented silicon steel as raw material. It is found that the twinning system with the maximum Schmid factor and shear mechanical work would be activated. The area fraction of twins increased with the cold rolling reduction. The orientations of twins mainly appeared to be α-fiber (<110>//RD), most of which were {001}<110> orientation. Analysis via combining deformation orientation simulation and twinning orientation calculation suggested that {001}<110> oriented twinning occurred at 40–50% rolling reduction. The simulation also confirmed more {100} <011> oriented twins would be produced in the cold rolling process and their orientation also showed less deviation from ideal {001}<110> orientation when a raw material with a higher content of exact Goss oriented grains was used.

Study on the Microstructure and Texture of Warm Rolled ZK60 Magnesium Alloy Sheet

2012 ◽  
Vol 557-559 ◽  
pp. 1344-1348
Author(s):  
Hong Mei Chen ◽  
Hua Shun Yu ◽  
Guang Hui Min ◽  
Yun Xue Jin
Keyword(s):  
Shear Bands ◽  
Rolling Direction ◽  
Rolling Process ◽  
Warm Rolling ◽  
Alloy Sheet ◽  
Rolling Temperature ◽  
Rolling Reduction ◽  
Basal Pole ◽  
Zk60 Alloy ◽  
Twin Roll

The microstructure and macrotexture of ZK60 alloy sheet were investigated through OM and XRD, which were produced by twin roll casting and sequential warm rolling. Microstructure of twin roll cast ZK60 alloy changed from dendrite structure to fibrous structure with elongated grains and high density shear bands along the rolling direction after warm rolling process at different rolling parameters. The density of shear bands increased with the decreasing of the rolling temperature, or the increasing of per pass rolling reduction. Dynamic recrystallization could be found during the warm rolling process at and above 350oC, and many fine grains could be found in the shear band area. The warm rolled ZK60 alloy sheet exhibited strong (0001) basal pole texture. The formation of the shear bands tends to cause the basal pole tilt slightly to the transverse direction after warm rolling. The intensity of (0001) pole figure increased with the decreasing of rolling temperature, or the increasing of per pass rolling reduction.

Sign in / Sign up

Export Citation Format

Share Document