Model Calculations of the Recrystallization Texture Formatio in α-Iron

Model calculations of primary recrystallization textures in bcc metals were carried out on the basis of a model which considers oriented nucleation as well as oriented growth. The influence of the input parameters, as deformation texture, nucleation distribution and growth law were investigated systematically. It is shown that the inhomogeneity of the deformed microstructure has to be taken into account. With this essential assumption the main features of the recrystallization texture formation can be explained by a growth selection process according to a 27∘ <110> and 84∘ <110> orientation relationship.

Download Full-text

Model Calculations of Recrystallization Texture Formation by Growth Selection

Textures and Microstructures ◽

10.1155/tsm.19.125 ◽

1992 ◽

Vol 19 (3) ◽

pp. 125-145 ◽

Cited By ~ 7

Author(s):

U. Köhler ◽

E. Dahlem-Klein ◽

H. Klein ◽

H. J. Bunge

Keyword(s):

Growth Rate ◽

Orientation Relationship ◽

Recrystallization Texture ◽

Rotation Angle ◽

Deformation Texture ◽

Texture Formation ◽

Model Calculations ◽

Rate Law ◽

Growth Selection

Model calculations of recrystallization texture formation are carried out on the basis of growth selection according to the 40∘〈111〉 orientation relationship. It is shown that the fastest growing “compromise” orientation depends very sensitively on the nature of the deformation texture components, their relative amount and their spread, as well as on the value of the rotation angle and the spread range of the growth rate law. On this basis the cube recrystallization texture as well as the brass recrystallization texture can be modelled without further assumptions. Also modifications of the recrystallization texture due to modifications of the starting deformation texture are sufficiently described by the model.

Download Full-text

Effect of Deformation Texture Component Composition on Cube Texture Formation during Primary Recrystallization in Ni-Based Alloys

Materials Science Forum ◽

10.4028/www.scientific.net/msf.495-497.1213 ◽

2005 ◽

Vol 495-497 ◽

pp. 1213-1218 ◽

Cited By ~ 2

Author(s):

I.V. Gervasyeva ◽

D.P. Rodionov ◽

B.K. Sokolov ◽

Yu.V. Khlebnikova

Keyword(s):

Texture Component ◽

Nickel Alloys ◽

Recrystallization Texture ◽

Cube Texture ◽

Component Composition ◽

Deformation Texture ◽

Primary Recrystallization ◽

Rolling Temperature ◽

Alloying Elements ◽

Texture Formation

Deformation and primary-recrystallization textures in nickel alloys with some metals (Nb, to 5.4%; W, to 7.4; Re, to 4.1%; Mo, to 9.3%; V, to 10.1%; Mn, to 22.1%; Al, to 12.0% and Cr, to 22.0%) has been studied depending on the content of alloying elements and the rolling temperature. The dependence of the type of recrystallization texture on the component composition of the deformation texture has been established.

Download Full-text

A Study of Recrystallization Texture Formation in Cold Rolled Iron Sheets with X-Ray Diffraction Techniques

Advances in X-ray Analysis ◽

10.1154/s0376030800008399 ◽

1970 ◽

Vol 14 ◽

pp. 214-230 ◽

Cited By ~ 8

Author(s):

M. Matsuo ◽

S. Hayami ◽

S. Nagashima

Keyword(s):

Cold Rolling ◽

Recrystallization Texture ◽

High Energy ◽

Orientation Dependence ◽

Primary Recrystallization ◽

Texture Formation ◽

X Ray Diffraction ◽

X Ray ◽

Stable Orientation ◽

Rotational Orientation

AbstractThe possibility that primary recrystallization textures are influenced by local inhomogeneities of deformation induced in the regions of grain boundaries has been confirmed by comparing the cold rolling and the annealing textures of polycrystalline pure irons which were different in the grain size prior to cold rolling. Analyses were made for the effects of deformation on crystals, namely storage of lattice strain and orientation spread, with application of X-ray diffraction techniques, in order to elucidate the role of in homogeneities of deformation on recrystallization texture formation. Apparent correspondence was found between the orientation dependence of stored strain energy and the textural change on recrystallization. This is a scribed to oriented nucleation in high energy blocks, in the case of originally large-grain material in which the effects of inhomogeneities of deformation are small. But discrepancies arise on this basis in originally small - grain material in which the effects of inhomogeneities of deformation are thought to be considerable. The discrepancy is inferred to arise as an effect of local inhomogeneities of deformation, from the change in the trend of rotational orientation spreads from, a stable orientation and the extent of development of potential nuclei of recrystallization at high energy blocks in the orientation spreads. The change is considered to give rise to the variation in amount of microstrain distribution, which is expressed in recovery characteristics of lattice strains and in the dependence of microstrains on the column length as analyzed by following the procedure of Warren-Averbach.

Download Full-text

Effects of Driving Force and Boundary Migration Velocity on Formation of Recrystallization Texture in Cold Rolled Pure Aluminum Sheets

Materials Science Forum ◽

10.4028/www.scientific.net/msf.753.257 ◽

2013 ◽

Vol 753 ◽

pp. 257-262 ◽

Cited By ~ 1

Author(s):

Wei Min Mao ◽

Ping Yang

Keyword(s):

Grain Growth ◽

Driving Force ◽

Recrystallization Texture ◽

Pure Aluminum ◽

Solute Drag ◽

Texture Formation ◽

Oriented Growth ◽

Aluminum Sheets ◽

Zener Drag ◽

Cold Rolled

The effects of net driving force for migration of high angle grain boundaries were emphasized beside many other factors which could influence the process of texture formation during recrystallization annealing of 95% cold rolled pure aluminum sheets. The net driving force consists basically of stored energy. However, it could be reduced by recovery, boundary drag, solute drag and Zener drag in different extents, in which only boundary drag is mis-orientation dependent. It was indicated that both oriented nucleation and oriented growth have obvious influence on recrystallization texture, and how far they influence the texture depends also on the level of net driving force when the grain growth starts during annealing. Oriented growth, which is induced by the differences in boundary drag of differently oriented grains, and the corresponding texture formation, could be observed easily when the recrystallization proceeds under relative higher solute drag and Zener drag in commercial purity aluminum. The oriented nucleation process prevails during recrystallization of sufficiently recovered high purity aluminum with very low solute drag and Zener drag, after which strong cube texture forms. In this case the oriented growth indicates limited effect. Both the oriented growth and oriented nucleation will fail if high purity deformation matrix without clear solute drag and Zener drag has not experienced an obvious recovery before recrystallization grain growth, since extremely high net driving force leads to very small critical nucleus size and multiplicity of growing grains, which results in randomization of recrystallization texture.

Download Full-text

Recrystallization of Iron Aluminides

Materials Science Forum ◽

10.4028/www.scientific.net/msf.467-470.525 ◽

2004 ◽

Vol 467-470 ◽

pp. 525-530 ◽

Cited By ~ 1

Author(s):

Werner Skrotzki ◽

K. Kegler ◽

R. Tamm ◽

C.G. Oertel

Keyword(s):

Recrystallization Texture ◽

Static Recrystallization ◽

Hot Extrusion ◽

Deformation Texture ◽

Primary Recrystallization ◽

Iron Aluminides ◽

The Other ◽

Texture Change ◽

Kinetics Of ◽

B2 Structure

Cast iron aluminides of three compositions were strongly deformed by hot extrusion and subsequently annealed. The texture development and kinetics of recrystallization were determined by local and global texture measurements. The deformation texture of Fe-10Al (A2 structure) is a <110>-fibre, Fe-35Al and Fe-50Al (B2 structure) show a <100>-<110> double fibre texture with <110> dominating Fe-35Al. The texture change with composition is due to a change in slip system. The deformed samples are partially dynamically recrystallized. The recrystallization components are aligned along the symmetry line <100>- <110> and towards <114> for Fe-10Al. For the other alloys the recrystallization texture is <111> with a tendency to <112>. The texture components do not change during static recrystallization. In general, the recrystallization texture is quite weak. The microstructure is very inhomogeneous ranging from deformed, strongly recovered to recrystallized areas. Beside primary recrystallization abnormal grain growth takes place. The heterogeneity of recrystallization makes it difficult to quantify the kinetics of recrystallization. The results are discussed with respect to the order of the alloys.

Download Full-text

Strong Goss Texture in Recrystallized Fe81Ga19 Sheet

Materials Science Forum ◽

10.4028/www.scientific.net/msf.702-703.742 ◽

2011 ◽

Vol 702-703 ◽

pp. 742-745 ◽

Cited By ~ 1

Author(s):

Zheng Hua He ◽

Yu Hui Sha ◽

Fang Zhang ◽

Liang Zuo

Keyword(s):

Shear Band ◽

Recrystallization Texture ◽

Sheet Thickness ◽

Rolling Process ◽

Deformation Texture ◽

Primary Recrystallization ◽

Recrystallization Annealing ◽

Goss Texture ◽

Conventional Rolling

Fe81Ga19sheets were produced by conventional rolling procedure. Recrystallization texture dominated with strong Goss ({110}) was successfully obtained through sheet thickness by primary recrystallization annealing. The development of Goss can be attributed to the favorable shear band morphology and deformation texture derived from the applied specific rolling process.

Download Full-text

Primary Recrystallization Texture in Rolled (Fe81Ga19)99B1 Sheet

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.535-537.772 ◽

2012 ◽

Vol 535-537 ◽

pp. 772-775 ◽

Cited By ~ 1

Author(s):

Zheng Hua He ◽

Di Yao Su ◽

Yu Hui Sha ◽

Fang Zhang ◽

Liang Zuo

Keyword(s):

Shear Band ◽

Grain Growth ◽

Texture Component ◽

Recrystallization Texture ◽

Sheet Thickness ◽

Deformation Texture ◽

Primary Recrystallization ◽

Alloy Sheet ◽

X Ray ◽

Electron Backscattering Diffraction

The recrystallization texture in a rolled polycrystalline (Fe81Ga19)99B1 alloy sheet was investigated using X-ray and EBSD (Electron backscattering diffraction) methods. The η fiber (//RD) with dominant Goss ({110}) component was successfully obtained through sheet thickness after primary recrystallization. Goss remains the dominant texture component during further grain growth. The development of Goss can be attributed to the specific rolling induced favorable shear band morphology and deformation texture. The results provide a prospective route for the efficient recrystallization texture optimization and economical production of Fe-Ga sheets.

Download Full-text