Rolling Structure and Elastic Anisotropy of Cold-rolled &alpha; Brass

The evolution of texture and grain orientations in a cold-rolled steel of BCC structure was simulated by a reaction stress (RS) model. The results show that cold-rolled texture could be assessed based on a RS model because the stress and strain are considered to remain consistent in the deformation process. The strain consistency is actualized by the cooperation of two plastic strains and an elastic strain. The accumulation range of each reaction stress and different activation abilities of {110}<111> and {112}<111> slip systems strongly affect the calculated deformation textures. The values of reaction stress are influenced by elastic anisotropy; however, the effects are greatly reduced because its corresponding reaction stress accumulation is limited. Typical α-fiber and γ-fiber textures are achieved when the reaction stress accumulation coefficients αijs are chosen suitably. Furthermore, the αij values that are selected based on statistically calculated textures can also be used to simulate the orientation change of multiple orientations. The existence of reaction stress is able to stabilize crystallographically symmetrical orientations under rolling deformation, in which the Schmid factors of several slip systems are identical.

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Recrystallization of cold-rolled copper and the fourier analysis of the elastic anisotropy

Soviet Physics Journal ◽

10.1007/bf00819744 ◽

1967 ◽

Vol 10 (7) ◽

pp. 18-20

Author(s):

A. A. Bryukhanov ◽

O. I. Tereshchenko ◽

A. E. Bryukhanov

Keyword(s):

Fourier Analysis ◽

Elastic Anisotropy ◽

Cold Rolled

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Texture Development and Anisotropic Photoelastic Properties in Rolled Silver Chloride

Textures and Microstructures ◽

10.1155/tsm.24.105 ◽

1995 ◽

Vol 24 (1-3) ◽

pp. 105-119

Author(s):

P. Dietz ◽

H. Gieleßen

Keyword(s):

Elastic Anisotropy ◽

Silver Chloride ◽

Monochromatic Light ◽

Theoretical Studies ◽

X Ray ◽

State Of Stress ◽

Cold Rolled ◽

Polycrystalline Silver ◽

Experimental And Theoretical Studies ◽

Relative Retardation

Experimental and theoretical studies have been carried out in order to relate elastic anisotropy to optical anisotropy by means of photoelasticity. The fundamentals of anisotropic photoelasticity have been described. Specimens of monocrystalline and polycrystalline silver chloride have been submitted to tensile stress and relative retardation and extinction angles observed in polarized monochromatic light to show conformity to the theories which quantitatively relate the state of stress and optical phenomena. Textures of cold-rolled as well as of recrystallized silver chloride specimens were determined with an X-ray goniometer. Texture determining parameters such as degree of rolling and recrystallisation time and temperature have been varied. Textures found in silver chloride after various processing have been characterized.

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Secular Change after Cold-working and Anneal-hardening of Cold-rolled α Brass

Journal of the Japan Institute of Metals and Materials ◽

10.2320/jinstmet1952.22.4_158 ◽

1958 ◽

Vol 22 (4) ◽

pp. 158-161

Author(s):

Osamu Izumi ◽

Tadatsugu Yoshiki ◽

Takayoshi Monma

Keyword(s):

Cold Working ◽

Secular Change ◽

Anneal Hardening ◽

Cold Rolled ◽

Alpha Brass

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Heterogeneity of Deformation in Cold-Rolled Brass

Journal of Engineering for Industry ◽

10.1115/1.3439412 ◽

1978 ◽

Vol 100 (2) ◽

pp. 217-221

Author(s):

N. J. Thompson ◽

W. L. Bradley

Keyword(s):

Deformation Zone ◽

Width Ratio ◽

Indentation Hardness ◽

Average Strain ◽

Strain Variation ◽

Line Field ◽

Slip Line Field ◽

Cold Rolled ◽

Alpha Brass ◽

Good Agreement

The heterogeneity of deformation produced in alpha brass during cold rolling for various deformation zone geometries has been studied. The strain variation through the thickness was measured indirectly using indentation hardness. The redundant strain factor Φ, which is the ratio of the average strain through the thickness to the geometric strain, was found to increase from 1.0 to 16.3 as the deformation zone height to width ratio (Δ) increased from 1.0 to 11.2. Slip line field predictions of the redundant strain factor for various Δ values were made assuming no friction and no strain hardening. The predictions were in surprisingly good agreement with the experimental observations.

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Estimation of 4th and 6th Order ODF Coefficients From Elastic Properties in Cold Rolled Steel Sheets

Textures and Microstructures ◽

10.1155/tsm.11.41 ◽

1989 ◽

Vol 11 (1) ◽

pp. 41-56 ◽

Cited By ~ 9

Author(s):

Kei Sakata ◽

Dominique Daniel ◽

John J. Jonas

Keyword(s):

Elastic Properties ◽

Elastic Energy ◽

Elastic Anisotropy ◽

Polycrystalline Materials ◽

Orthorhombic Symmetry ◽

Rolled Steel ◽

Steel Sheets ◽

Different Types ◽

Cold Rolled ◽

Annealed Steel

Generally only the 4th order ODF coefficients are deduced from the observed elastic anisotropy of textured polycrystalline materials with cubic/orthorhombic symmetry. In this study, a method is described for the prediction of the 4th and 6th order ODF coefficients from the elastic properties of cold rolled and annealed steel sheets of 5 different types. In order to link these properties with the texture, the elastic energy method of Bunge (1974) is employed. By estimating the volume fractions of the principal preferred orientations and their gaussian spreads, ODF coefficients of the 4th (C411, C412 and C413) and 6th (C611, C612 and C614) orders can be successfully obtained. As a result, the planar r-value distribution can be predicted more accurately than when only the 4th order coefficients are employed.

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