scholarly journals Evolution of the Shear Band in Cold-Rolling of Strip-Cast Fe-1.3% Si Non-Oriented Silicon Steel

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 775
Author(s):  
Yuanxiang Zhang ◽  
Yukun Xia ◽  
Hao Dun ◽  
Yang Wang ◽  
Feng Fang ◽  
...  
Keyword(s):  
Cold Rolling ◽  
Shear Bands ◽  
Cube Texture ◽  
Silicon Steel ◽  
Cube Orientation ◽  
Residual Part ◽  
The Matrix ◽  
Cold Rolling And Annealing ◽  
Strip Cast ◽  
Matrix Orientation

Cube texture and microstructural evolution of as-cast non-oriented silicon steel (1.3% Si) during cold rolling and annealing were studied. The results showed that the as-cast microstructure with grain size in the range of 100–500 μm had a weak texture. The strong orientation was mainly located at {100} and {110} planes. A significant content of shear-deformed grains oriented with {110}<110> were obtained by cold-rolling, and many regions oriented with Cube texture were distributed in the shear bands. During cold-rolling, the orientation of the shear-deformed microstructure tilted towards the {111}<112> orientation, while the matrix orientation retained {110}<110>. On further cold-rolling, the residual part of {110}<110> experienced shear deformation, forming more shear bands, strengthening the Cube orientation. During annealing, Cube orientation grains nucleated in the shear bands leading to strong Cube texture, and corresponding B50 was 1.83T/1.79T.

Characteristics of Cube Orientation for Pure Iron Tape Fabricated by Cold Rolling and Annealing

2021 ◽  
Vol 1016 ◽  
pp. 1830-1834
Author(s):  
Daisuke Okai ◽  
Atsushi Yamamoto ◽  
Toshiya Doi ◽  
Hiroki Adachi
Keyword(s):  
Grain Size ◽  
Cold Rolling ◽  
Pure Iron ◽  
Ebsd Analysis ◽  
Angular Deviation ◽  
Cube Orientation ◽  
Coarse Grains ◽  
Back Scattering ◽  
Areal Fraction ◽  
Cold Rolling And Annealing

A pure iron tape with cube orientation was fabricated by cold rolling and annealing. The orientation characteristics of the pure iron tape were evaluated using electron back-scattering diffraction (EBSD) analysis. The secondary recrystallized grains with cube orientation was formed on the tape surface for the pure iron tape. The coarse grains with a grain size of ca. 1mm were observed on the tape surface. The areal fraction of cube orientations with an angular deviation ≤ 20 ̊ amounts to ca. 81%.

Formation and Development of Strong Cube Recrystallization Texture in an Aluminium of Commercial Purity

2011 ◽  
Vol 702-703 ◽  
pp. 391-397 ◽  
Author(s):  
Anne Laure Helbert ◽  
Wei Wang ◽  
Thierry Baudin ◽  
François Brisset ◽  
Brisset Penelle
Keyword(s):  
Cold Rolling ◽  
Volume Fraction ◽  
Cube Texture ◽  
Deformation Energy ◽  
Processing Route ◽  
Commercial Purity ◽  
Cube Orientation ◽  
The Difference ◽  
Aluminium Sheets ◽  
Purity Grade

The goal of the present study inspired by previous works on high purity aluminiun was to manufacture aluminium sheets of commercial purity, grade 1050, with a strong cube texture. In this preliminary work on AA1050, sheets which cube volume fraction reaches 65% have been manufactured. Parameters controlling cube orientation development are mainly the solute dragging due to impurities in solid solution and the stored deformation energy. Besides the 85% cold rolling (CR), two extra annealings and a slight cold rolling are introduced in the processing route to increase the cube volume fraction. The cube orientation, whose substructure is equiaxed, is important for its recovery. It develops thanks to the difference of stored energy relative to that of its first neighbors; the slight cold rolling enhances growth of these cube grains.

Survival of Goss Grains during Cold Rolling of a Silicon Steel Single Crystal

2005 ◽  
Vol 495-497 ◽  
pp. 1061-1066 ◽  
Author(s):  
Dorothée Dorner ◽  
Ludger Lahn ◽  
Stefan Zaefferer
Keyword(s):  
Cold Rolling ◽  
Single Crystal ◽  
High Strain ◽  
Shear Bands ◽  
Rolling Process ◽  
Silicon Steel ◽  
Oriented Crystal ◽  
Cold Rolled ◽  
Goss Orientation ◽  
Crystal Volume

A silicon steel single crystal with initial Goss orientation, i.e. the {110}<001> orientation, was cold rolled up to 89 % thickness reduction. Most of the crystal volume rotates into the two symmetrical equivalent {111}<112> orientations. However, a weak Goss component is still present after high strain, although the Goss orientation is mechanically instable under plane strain loading. Two types of Goss-oriented crystal volumes are found in the highly deformed material. We suggest that their origin is different. The Goss-oriented regions that are observed within shear bands form during the cold rolling process. In contrast, those Goss-oriented crystal volumes that are found inside of microbands survive the cold rolling.

scholarly journals Effect of cold rolling and annealing temperature to the characteristics of α + β' phases in Cu-29.5Zn-2.5Al alloy produced by gravity casting

2020 ◽  
Vol 56 (1) ◽  
pp. 89-97
Author(s):  
I. Angela ◽  
I. Basori ◽  
B.T. Sofyan
Keyword(s):  
Cold Rolling ◽  
Shear Bands ◽  
X Ray Diffraction ◽  
Gravity Casting ◽  
X Ray ◽  
Low Temperature Annealing ◽  
Slip Bands ◽  
Cold Rolling And Annealing ◽  
Higher Temperature ◽  
Cold Rolled

Al-brass alloys (Cu29.5Zn2.5Al wt. %) were produced by gravity casting and homogenized at 800?C for 2 h, resulting in a binary phase morphology identified as cubic ? and martensitic ?? phases through X-ray diffraction (XRD). Samples were then subsequently cold rolled and annealed at 150, 300, 400, and 600?C for 30 minutes. Visible traces of slip, intersecting slip bands, and shear bands were observed in microstructure images of the samples after each progressive deformation stage. Deformation-induced martensites were present after 20 % cold rolling. Higher thickness reduction resulted in simultaneous strain hardening of the phases. Low temperature annealing slightly increased microhardness, of both ? and ??, due to the formation of precipitates. SEM-EDX analysis showed that no solute segregation was found in annealed samples. Annealing at higher temperature resulted in conventional softening. Recrystallized equiaxed ?? phase grains were visible after annealing at 600?C.

scholarly journals EBSD Observation of Pure Iron with Near-Cube Orientation Fabricated by Cold Rolling and Annealing

2017 ◽  
Vol 58 (5) ◽  
pp. 838-841
Author(s):  
Daisuke Okai ◽  
Masatoshi Yae ◽  
Atsushi Yamamoto ◽  
Toshiya Doi
Keyword(s):  
Cold Rolling ◽  
Pure Iron ◽  
Cube Orientation ◽  
Cold Rolling And Annealing

The Possibility of Obtaining Electrical Steel with Texture {100} <001>

2018 ◽  
Vol 284 ◽  
pp. 483-488 ◽  
Author(s):  
A.A. Redikultsev ◽  
German M. Rusakov ◽  
Mikhail L. Lobanov
Keyword(s):  
Cold Rolling ◽  
Crystal Lattice ◽  
Habit Plane ◽  
Electrical Steel ◽  
Shear Bands ◽  
Primary Recrystallization ◽  
Crystallographic Direction ◽  
Texture Formation ◽  
Orientation Microscopy ◽  
The Matrix

We have investigated the cold rolling mesostructure and recrystallization of BCC crystals {110} <110> Fe-3%Si using a method of orientation microscopy. The 40% deformation caused shear bands with habit plane at a slope of ~20 ... 28° to the direction of rolling to form a "fishbone"-type structure. The orientation of the crystal lattice in SBs was close to {100} <001>. It can be represented as a rotation around TD close to the crystallographic direction [001] at an angle of ~ ± 37°. Such disorientation corresponds to the special disorientation CSL Σ5 (36.87о, axis [001]) between SBs and the matrix. Primary recrystallization centers in previously deformed crystal {110} <110> are formed primarily in SBs. Their orientation appears to be close to the orientation {100} <001>. It has been shown that the usage of patterns of texture formation in the shear bands of original crystallites {110} <110> allows to obtain electrical steel with a cubic texture {100} <001>.

Effects of Normalizing Annealing on the Recrystallization Texture of 4.2wt.%Si Non-Oriented Electrical Steel Thin Sheets

2012 ◽  
Vol 535-537 ◽  
pp. 615-619 ◽  
Author(s):  
Jinlong Liu ◽  
Yu Hui Sha ◽  
Yong Chuang Yao ◽  
Fang Zhang ◽  
Liang Zuo
Keyword(s):  
Cold Rolling ◽  
Recrystallization Texture ◽  
Electrical Steel ◽  
Shear Bands ◽  
Rolling Process ◽  
Thin Sheets ◽  
Conventional Procedure ◽  
Cold Rolling And Annealing ◽  
Cold Rolled ◽  
Normalizing Annealing

The 4.2wt.%Si non-oriented electrical steel thin sheets with the thickness of 0.30mm were produced by the conventional procedure including hot rolling, cold rolling and annealing. The recrystallization texture was analyzed with emphasis on the effect of normalizing annealing. The results show that the  fiber with peak at {111} is weaker and η fiber is stronger in the sheets with normalizing annealing than those without normalizing annealing, either under the cold rolled reduction of 77% or 86%. Effects of normalizing annealing on the recrystallization texture can be explained in terms of the characteristic of the shear bands formed during cold rolling process.

scholarly journals Effect of Slab Reheating Temperature on Cold Rolling Texture Evolution of Nb-Containing Grain-Oriented Silicon Steel

Crystals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1478
Author(s):  
Liguang Wang ◽  
Shuhuan Wang ◽  
Jie Li ◽  
Jinyu Liang ◽  
Yunli Feng
Keyword(s):  
Cold Rolling ◽  
Texture Evolution ◽  
Cube Texture ◽  
Rolling Texture ◽  
Rolling Process ◽  
Silicon Steel ◽  
Single Stage ◽  
Two Stage ◽  
Goss Texture ◽  
Key Factor

Texture control of grain-oriented silicon steel is the key factor to ensure the magnetic properties of the finished product. Nb-containing grain-oriented silicon steel with different slab reheating temperatures was hot rolled followed by single-stage or two-stage cold rolling, and the textures were also analyzed. In the single-stage cold rolling process, as the slab reheating temperature is reduced, the intensity of the rotating cube texture {100}<011> and Goss texture {011}<100> drops, and that of the {111}<112> texture increases. In the two-stage cold rolling process, with the decrease in the slab reheating temperature, the intensity of the {111}<112> texture increases from 4.958 to 6.809. At the same slab reheating temperature, the intensity of the rotating cube texture declines more significantly in the two-stage cold rolling process. Finally, two-stage cold rolling with the slab reheating temperature of 1220 °C is found to be more beneficial for the formation of a sharp Goss texture during the second recrystallization. The magnetic induction intensity B800 of the final product is 1.87T, and the iron loss P1.7/50 is 1.36 W/kg.

Microstructure and Texture Development in Ti-5Al-5Mo-5V-3Cr Alloy during Cold Rolling and Annealing

2013 ◽  
Vol 551 ◽  
pp. 210-216 ◽  
Author(s):  
Alireza Ghaderi ◽  
Peter D. Hodgson ◽  
Matthew R. Barnett
Keyword(s):  
Cold Rolling ◽  
Electron Backscatter Diffraction ◽  
Texture Evolution ◽  
Shear Bands ◽  
Annealing Treatment ◽  
Β Phase ◽  
Three Samples ◽  
Cold Rolling And Annealing ◽  
Cold Rolled ◽  
Phase Sample

This study focuses on the microstructure and texture evolution of a Ti-5Al-5Mo-5V-3Cr alloy during cold rolling and annealing treatments. Three samples with different initial microstructures were cold rolled to a 40% reduction in thickness. The starting microstructure of one sample was single β phase while two other specimens were α+β phases with different α particle sizes, distributed in β grains. For all three samples, the average size of primary β grains was 150 µm. The cold rolled specimens were then annealed at 860 °C (10 °C above the β transus temperature) for 5 minutes followed by water quenching. Microstructure development during cold rolling and recrystallization was studied by scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD) technique. Microstructure investigations showed that massive amount of shear bands occurred during the cold rolling of the single β phase sample while only a few shear bands were observed in the α+β cold rolled microstructures. The cold rolled texture of the sample comprised of a single β phase contains a gamma fibre (//ND) and a partial alpha fibre (//RD). Annealing treatment decreased the intensity of the cold rolled texture in the single β phase sample. Also, it was found that the presence of α precipitates changes the common annealing texture observed in the single β phase specimen.

Recrystallization Texture of Heavily Cold Rolled Polycrystalline Nickel Sheets with and without Strong Starting Cube Texture

2013 ◽  
Vol 753 ◽  
pp. 293-296 ◽  
Author(s):  
Pinaki Prasad Bhattacharjee ◽  
Yoshihiro Takatsuji ◽  
Yoji Miyajima ◽  
Daisuke Terada ◽  
Nobuhiro Tsuji
Keyword(s):  
Cold Rolling ◽  
High Purity ◽  
Recrystallization Texture ◽  
Cube Texture ◽  
Polycrystalline Nickel ◽  
Roll Bonding ◽  
Different Temperatures ◽  
Cold Rolling And Annealing ◽  
Cold Rolled ◽  
Conventional Rolling

The evolution of texture is studied in high purity (~99.7%) nickel sheets with widely different starting cube texture ({001}) intensities following heavy cold rolling and annealing. For this purpose two nickel sheets with strong and weak starting recrystallization cube texture (SSCT and WSCT, respectively) prepared by Accumulative Roll Bonding and conventional rolling, respectively, followed by annealing are used as the starting materials for subsequent processing. These sheets are cold rolled to 90% reduction in thickness and annealed at different temperatures. Profuse cube oriented bands could be identified in the SSCT nickel sheet after 90% cold rolling as opposed to rather insignificant presence of cube regions in the WSCT nickel sheet. However, the WSCT nickel sheets consistently show stronger cube texture after annealing treatments as compared to the SSCT material. The failure to observe recrystallization cube texture in SSCT is attributed to the inhibited nucleation of cube grains owing to the unfavorable misorientation environment surrounding cube regions in the deformed matrix.

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