Texture Evolution during Cold Rolling and Annealing in Dual Phase Steels

This paper investigates the bulk texture evolution during cold rolling and annealing of Dual Phase steels for different processing conditions, i.e. cold reduction within the reduction range of 45 to 73% and annealing at temperatures between 650 and 850°C, which includes the recovery, recrystallisation and partial phase transformation domains. Textures have been measured by X-ray diffraction. The results reveal that the rolling texture is strengthened during the recovery process or initial stage of recrystallisation while during recrystallisation a weak RD-ND type of texture appears. During subsequent phase transformation the RD-ND type of texture further weakens and later randomises as the second phase fraction increases beyond 75%.

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

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.160.251 ◽

2010 ◽

Vol 160 ◽

pp. 251-256 ◽

Cited By ~ 2

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.

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The Texture Evolution of Dual Phase Steel Sheets

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.26-28.51 ◽

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.

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Microstructure and texture evolution in dual-phase steels: Competition between recovery, recrystallization, and phase transformation

Materials Science and Engineering A ◽

10.1016/j.msea.2010.03.028 ◽

2010 ◽

Vol 527 (16-17) ◽

pp. 4161-4168 ◽

Cited By ~ 82

Author(s):

N. Peranio ◽

Y.J. Li ◽

F. Roters ◽

D. Raabe

Keyword(s):

Phase Transformation ◽

Texture Evolution ◽

Dual Phase ◽

Dual Phase Steels

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Texture Evolution and Control of 2524 Aluminum Alloy and Its Effect on Fatigue Crack Propagation Behavior

Applied Sciences ◽

10.3390/app11125550 ◽

2021 ◽

Vol 11 (12) ◽

pp. 5550

Author(s):

Yuqiang Chen ◽

Chuang Xiong ◽

Wenhui Liu ◽

Suping Pan ◽

Yufeng Song ◽

...

Keyword(s):

Electron Microscopy ◽

Aluminum Alloy ◽

Fatigue Crack ◽

Cold Rolling ◽

Texture Evolution ◽

Cold Deformation ◽

Solution Treatment ◽

Second Phase ◽

Fatigue Crack Growth Resistance ◽

Volume Fractions

The influences of cold rolling and subsequent heat treatment on the microstructure evolution of 2524 alloy were investigated using an orientation distribution function (ODF) and electron back-scattered diffraction (EBSD). A preparation method of 2524-T3 aluminum alloy with a strong Brass texture was developed, and its effect on the fatigue properties of the alloy was investigated using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that with the increase in cold rolling deformation from 0% to 80%, the volume fractions of Brass, copper, and S textures in the 2524-T3 alloy also increase, especially in the case of Brass and S textures. However, the volume fractions of cube and Goss textures are reduced significantly, especially for cube textures, which are decreased by 57.4%. Reducing coarse second-phase particles (CSPs) is conducive to the formation of a strong deformation texture during cold rolling. A 10% deformation at each rolling pass, followed by a step annealing, helps the preservation of a Brass texture even after solution treatment at 500 °C for 0.5 h, while a large cold deformation followed by high-temperature annealing helps the formation of a strong cube texture. The Brass texture can enhance the strength while decreasing the fatigue crack growth resistance of this alloy.

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