The Texture Evolution of Dual Phase Steel Sheets

2007 ◽  
Vol 26-28 ◽  
pp. 51-54
Author(s):  
Yan Dong Liu ◽  
Q.W. Jiang ◽  
He Tong ◽  
Yan Dong Wang ◽  
Liang Zuo
Keyword(s):  
Cold Rolling ◽  
Recrystallization Texture ◽  
Dual Phase Steel ◽  
Single Phase ◽  
Texture Evolution ◽  
Rolling Texture ◽  
Dual Phase ◽  
Steel Sheets ◽  
Cold Rolling Texture ◽  
Martensite Microstructure

in this paper, the texture evolution of cold rolling and recrystallization of dual phase steel sheets is studied. The experimental results show that the cold rolling texture components are γ fiber (<111>//N.D.) and α fiber (<110>//R.D.). After heat treatment (austenizing temperatures 960°C and 980°C, 0.7°C/S cooling to 650°C, a rational holding time to form ferrite and martensite microstructure), the texture components are still γ fiber and α fiber, the recrystallization texture in dual phase steel sheet is remarkable different compared to the recrystallization texture in the pure (single phase??) ferrite.

scholarly journals Effects of α+γ Intercritical and γ Single-Phase Annealing on Martensitic Texture Evolution in Dual-Phase Steel Sheets

2018 ◽  
Vol 58 (6) ◽  
pp. 1136-1145
Author(s):  
Hidekazu Minami ◽  
Kaneharu Okuda ◽  
Shinjiro Kaneko ◽  
Yasunobu Nagataki
Keyword(s):  
Dual Phase Steel ◽  
Single Phase ◽  
Texture Evolution ◽  
Dual Phase ◽  
Steel Sheets

scholarly journals Effects of α+γ Intercritical and γ Single-phase Annealing on Martensitic Texture Evolution in Cold-rolled Dual-phase Steel Sheets

2017 ◽  
Vol 103 (1) ◽  
pp. 45-53
Author(s):  
Hidekazu Minami ◽  
Kaneharu Okuda ◽  
Shinjiro Kaneko ◽  
Yasunobu Nagataki
Keyword(s):  
Dual Phase Steel ◽  
Single Phase ◽  
Texture Evolution ◽  
Dual Phase ◽  
Steel Sheets ◽  
Cold Rolled

EBSD Study of Substructure and Texture Formation in Dual-Phase Steel Sheets for Semi-Finished Products

2010 ◽  
Vol 160 ◽  
pp. 251-256 ◽  
Author(s):  
M. Masimov ◽  
N. Peranio ◽  
B. Springub ◽  
Franz Roters ◽  
Dierk Raabe
Keyword(s):  
Cold Rolling ◽  
Annealing Temperature ◽  
Texture Evolution ◽  
Industrial Process ◽  
Dual Phase ◽  
Technological Parameters ◽  
Dual Phase Steels ◽  
Final Annealing ◽  
Steel Sheets ◽  
Different Temperatures

Using SEM/EBSD the substructure and texture evolution in dual phase steels in the first steps of the process chain, i.e. hot rolling, cold rolling, and following annealing were characterized. In order to obtain dual phase steels with high ductility and high tensile strength an industrial process was reproduced by cold rolling of industrially hot rolled steel sheets of a thickness of 3.75 mm with ferrite and pearlite morphology down to a thickness of 1.75 mm and finally annealing at different temperatures. Such technique allows a compilation of ferrite and martensite morphology typical for dual phase steels. Due to the competition between recovery, recrystallization and phase trans-formation during annealing a variety of ferrite martensite morphologies was produced by promoting one of the mechanisms through the variation of technological parameters such as heating rate, intercritical annealing temperature, annealing time, cooling rate and the final annealing temperature. Annealing induced changes of the mechanical properties were determined by hardness measurements and are discussed on the basis of the results of the substructure investigations.

The Effect of Nb-Ti on Cold Rolling Texture and Recrystallization Texture of B4003M

2011 ◽  
Vol 181-182 ◽  
pp. 1054-1058
Author(s):  
Yan Dong Liu ◽  
Yi Qiao Yang
Keyword(s):  
Grain Size ◽  
Cold Rolling ◽  
Recrystallization Texture ◽  
Mutual Effect ◽  
Rolling Texture ◽  
Single Element ◽  
Cold Rolling Texture

In this study, the effect of different compositions of the stabilized elements of Nb-Ti for cold rollling textures and the recrytalization textures of B4003M has been investigated. Cold rolling texture at 80% reduction displayed by the Nb-Ti added specimen is the weakest of all. When annealing at 900°C for 10 min, the recrystalli -zation textures displayed by the Nb-added, Ti-added, Nb-Ti-added and Nb-Ti-free alloys are compared. Results show that: {111} recrystallization texture in Nb-added alloy is the strongest, whereas it in the Nb-Ti-free alloy is the lowest. The mutual effect of Nd and Ti on refining the grain size is more obvious than the single element effect, while Nd is more effective than Ti.

Rolling and Recrystallization Textures in Asymmetrically Rolled Silicon Steel Thin Strip

2005 ◽  
Vol 495-497 ◽  
pp. 429-434 ◽  
Author(s):  
Y.H. Sha ◽  
S.C. Zhou ◽  
Z.K. Zou ◽  
F. Zhang ◽  
Liang Zuo
Keyword(s):  
Cold Rolling ◽  
Recrystallization Texture ◽  
Steel Sheet ◽  
Rolling Texture ◽  
Silicon Steel ◽  
Strip Thickness ◽  
Thin Strip ◽  
Speed Ratio ◽  
Orientation Density ◽  
Cold Rolling Texture

Fe-3.10%Si thin strips were prepared from commercial grain oriented silicon steel sheet by cold rolling with different speed ratios and annealed at 1123K in vacuum, the cold rolling and recrystallization textures were analyzed. Cold rolling texture consists mainly of {111}<112>, {554}<225> and {332}<113> components, while their orientation densities vary with speed ratio and layer through strip thickness. Recrystallization texture development depends on speed ratio obviously, and the peak orientation density deviates from {110}<001> towards {210}<001> with the increase in speed ratio.

Study of Texture in Ultra Fine Grained Dual Phase Steel Sheets

2011 ◽  
Vol 702-703 ◽  
pp. 806-809
Author(s):  
Papa Rao Mondi ◽  
R. Madhavan ◽  
V. Subramanya Sarma ◽  
S. Sankaran
Keyword(s):  
Cold Rolling ◽  
Dual Phase Steel ◽  
Intercritical Annealing ◽  
Rolling Direction ◽  
Dual Phase ◽  
Fine Grained ◽  
Steel Sheets ◽  
Cold Rolling And Annealing ◽  
Nb Microalloyed Steel ◽  
Cold Rolled

Severe cold rolling and short intercritcal annealing is often used to produce ultra-fine grained ferrite and martensite dual phase steels. In this paper, microstructure and texture of Nb-microalloyed steel following cold rolling and short intercritical annealing is investigated. The results show that cold rolling and annealing resulted in ultra-fine grained dual phase steel consisted of polygonal ferrite in the range of ~1-2 μm in size. In cold rolled material, the texture components are γ fiber (//normal direction) and α fiber (//rolling direction). Partial recrystallization texture was observed following intercritical annealing.

Effect of Finishing Temperature on Texture Evolution and Magnetic Properties in Heavy Cold Rolled High Silicon Steel Thin Sheets

2011 ◽  
Vol 306-307 ◽  
pp. 381-384
Author(s):  
Jin Long Liu ◽  
Yu Hui Sha ◽  
Fang Zhang ◽  
Yong Chuang Yao ◽  
Ji Chao Li ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Cold Rolling ◽  
Recrystallization Texture ◽  
Texture Evolution ◽  
Thin Sheet ◽  
Rolling Texture ◽  
Silicon Steel ◽  
Final Annealing ◽  
High Silicon Steel ◽  
High Silicon

0.2mm-thick high silicon steel thin sheet under 94% cold rolling reductions has been successfully produced by conventional rolling method. Texture evolution during hot rolling, cold rolling and final annealing as well as magnetic properties has been investigated with emphasis on the effect of finishing temperature. It is found that a favorable strong {001}<210> recrystallization texture and evidently improved magnetic properties can be obtained at the finishing temperature of 900°C, which is in contrast with relatively strong detrimental {111}<112> and weak {001}<210> recrystallization texture at the finishing temperature of 700°C. Effects of finishing temperature can be explained in terms of the cold rolling texture due to different texture morphology in hot bands.

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