Role and control of texture in deep-drawing steels

Mishra, Shubham; Därmann, C.

doi:10.1179/095066082790324469

Cited by 14 publications

(20 citation statements)

References 11 publications

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“…These were selected based on their importance in LC steel crystallographic texture 1,2,[4][5][6][7][8][9][10] and the fact that they can be estimated both by XRD peak profiles and micro-texture measurements. Often inside the same deformed grain, regions with and without strain localizations were apparent (see Fig.…”

Section: Discussionmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9][10] Though debates still continue on the exact mechanisms of γ-fibre recrystallization; 2,[4][5][6][7][8][9][10][11][12] it is generally acknowledged that preferred appearance of grain interior strain localizations is a pre-requisite for creating a strong post-recrystallization texture. [13][14][15][16][17][18] It is important, at this stage, to expand on the earlier terms: 'preferred appearance' and 'grain interior strain localizations'.…”

Section: Introductionmentioning

confidence: 99%

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Orientation Dependent Recovery in Interstitial Free Steel

Khatirkar

Vadavadagi²,

Shekhawat³

et al. 2012

ISIJ Int.

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Cold rolled (40, 60 and 80% thickness reductions from hot-band) interstitial free (IF) steel samples were recovered at 500°C for different times (15 min to 32 h). The recovery kinetics, studied through a combination of X-ray line profile analysis and high resolution electron diffraction, were best represented by logarithmic relationship. Though the kinetics was dependent on the prior deformation, γ (ND//<111>) fibre clearly had stronger recovery than θ (ND//<100>) fibre. Recovery was observed, statistically to create grain interior strain localizations: an orientation independent phenomenon. Increase in misorientation across such strain localizations was, however, orientation dependent. This was responsible for enhanced in-grain misorientation in recovered γ-fibre grains/bands. Extended recovery of 80% pre-deformed samples also led to coarsening of γ-fibre bands: strain induced boundary migration (SIBM) or uniform movement of γ-fibre boundaries into neighbouring non γ-fibre orientations.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Orientation Dependent Recovery in Interstitial Free Steel

Khatirkar

Vadavadagi²,

Shekhawat³

et al. 2012

ISIJ Int.

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“…High plastic strain ratio, large work hardening exponent, low yield strength, low yield ratio and strong {111}©UVW ª texture are all the important specifications of the cold-rolled deep drawing steel, while strong {111}©UVW ª texture is the most critical factor for obtaining an excellent deep drawing property in the 08Al cold-rolled deep drawing steel. 1) This kind of favorable texture is controlled by the AlN precipitation, which is dependent upon the coiling temperature during hot rolling. The numerous research and production practice have demonstrated that the heating-up temperature, beginning temperature, finishing temperature and coiling temperature are all the parameters necessary to be controlled in 08Al coldrolled deep drawing steel.…”

Section: Introductionmentioning

confidence: 99%

Effects of Coiling Temperature on the Microstructures, Mechanical Properties and Textures of 08Al Deep Drawing Steel Sheet

Shi

Wu²,

Yang

et al. 2015

Mater. Trans.

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Effects of the coiling temperature on the microstructures and mechanical properties of 08Al hot-rolled steel sheet were investigated. Meanwhile, cold rolling and annealing experimental verifications were performed in the laboratory. The results show that when coiling is carried out at 592°C, the hot-rolled steel sheet exhibits good comprehensive mechanical properties. After cold rolling and annealing treatments, the experimental steel sheet also shows the optimal deep-drawability. The volume fraction of {111}©UVW ª texture component is the highest and the values of {111}©UVW ª/{001}©110ª and {111}©UVW ª/{001}©100ª are both the largest. However, the strip-like or massive cementites appear in the steel sheet as the coiling temperature is higher than 620°C, which is harmful to the deep-drawability of the experimental steel. Therefore, the coiling temperature should be controlled to be lower than 620°C in the 08Al deep drawing steel sheet.

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“…1) On the other hand, the good deep drawing properties in LC steels is attributed to the presence of strong γ-fibre ({111} or (ND// <111>)) recrystallization texture, while {001}<uvw> and α-fibre (RD//<110>) are considered harmful for deepdrawability. 2,[4][5][6][7][8][9][10][11][12][13] Recent advances in steel making technologies have helped us to create new generation of LC steels with exceptionally low levels of solute carbon and nitrogen content (less than 0.0030 wt%). 14,15) Titanium and/or niobium are added in these LC steels to bind the remaining solute carbon/nitrogen in the form of carbides, nitrides or carbonitrides rendering them virtually free from solute atoms.…”

Section: Introductionmentioning

confidence: 99%

“…20) The formability of LC steels, in general, and IF steels, in particular, is related to the formation of strong γ-fibre (ND//<111>) recrystallization texture. 2,3,[5][6][7]13,[18][19][20][21][22][23][24] The development of strong γ-fibre recrystallization texture is often considered from the mechanisms of preferred nucleation (ON) and/or growth (OG) of γ-fibre grains from the deformed grains/bands of similar orientation(s). [2][3][4]6,7,12,[18][19][20][21][22]24) The classical definition of ON and OG, has one problem, they were originally designed to address the recrystallization mechanisms, but fail to provide a clear demarcation between nucleation and growth.…”

Section: Introductionmentioning

confidence: 99%

Effect of Mode of Rolling on Recrystallization Kinetics and Microstructure Evolution in Interstitial Free High Strength Steel Sheet

2013

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The recrystallization kinetics and microstructure evolution after unidirectional and multi-step cross rolling of interstitial free high strength steel has been investigated systematically. Microhardness, electron backscattered diffraction and X-ray diffraction was used to characterize the recrystallization kinetics, microstructure and texture evolution during annealing. The obtained experimental data on recrystallization was evaluated in terms of Johnson-Mehl-Avrami-Kolmogorov (JMAK) kinetic model. The Avrami exponents varied between 1.03 at 1 073 K to 1.4 at 948 K for unidirectionally rolled sample, while for cross rolling, it varied between 2.6 at 1 073 K to 0.83 at 948 K. The recrystallization kinetics was observed to be faster for unidirectionally rolled samples. The deformed textures consisted of strong γ (ND//<111>) and α (RD//<110>) fibres in unidirectionally rolled sample, while a weak γ-fibre and strong rotated cube ({100}<110>) texture component was observed in cross rolled sample. After complete recrystallization, strong γ-fibre was observed in unidirectionally rolled sample, while strong γ and ε (TD//<110>) fibres were observed in cross rolled sample. The formation of recrystallization texture in unidirectionally rolled sample was explained by oriented nucleation. In cross rolled samples, orientation pinning and selective growth have a very strong role to play in developing the recrystallization textures.

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Role and control of texture in deep-drawing steels

Cited by 14 publications

References 11 publications

Orientation Dependent Recovery in Interstitial Free Steel

Orientation Dependent Recovery in Interstitial Free Steel

Effects of Coiling Temperature on the Microstructures, Mechanical Properties and Textures of 08Al Deep Drawing Steel Sheet

Effect of Mode of Rolling on Recrystallization Kinetics and Microstructure Evolution in Interstitial Free High Strength Steel Sheet

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