scholarly journals 3D microstructural evolution of primary recrystallization and grain growth in cold rolled single-phase aluminum alloys

2018 ◽  
Vol 26 (3) ◽  
pp. 035011 ◽  
Author(s):  
Khaled Adam ◽  
Dana Zöllner ◽  
David P Field
Keyword(s):  
Aluminum Alloys ◽  
Grain Growth ◽  
Microstructural Evolution ◽  
Single Phase ◽  
Primary Recrystallization ◽  
Cold Rolled

scholarly journals Microstructural Evolution during Recrystallization of Magnesiun Alloys

2012 ◽  
Vol 706-709 ◽  
pp. 1291-1296 ◽  
Author(s):  
Sang Bong Yi ◽  
Jan Bohlen ◽  
Stefanie Sandlöbes ◽  
Stefan Zaefferer ◽  
Dietmar Letzig ◽  
...  
Keyword(s):  
Grain Growth ◽  
Microstructural Evolution ◽  
Shear Bands ◽  
Rolling Direction ◽  
Sheet Rolling ◽  
Significant Difference ◽  
Basal Pole ◽  
Cold Rolled ◽  
Basal Type ◽  
Weak Texture

Microstructural evolution during the annealing of cold rolled Mg, Mg-1.5Nd and Mg-3Y sheets has been examined. The experimental results show a significant difference in recrystallization kinetics and grain growth between pure Mg and Mg-RE alloy sheets. Pure Mg sheet shows rapid recrystallization and grain growth, whereas recrystallization is considerably retarded in the Mg-RE alloys. Although recrystallized grains which are triggered at shear bands in the cold rolled pure Mg sheet show a relatively weak texture with a basal pole split into the sheet rolling direction, rapid grain growth is accompanied by re-strengthening of the basal-type texture. In contrast, a weak texture appears in the early recrystallization stage in Mg-RE alloys and is retained during annealing due to retarded recrystallization and grain growth.

Grain Growth Behavior of a Rapidly Solidified Fe-10Cr-8A1 Alloy

1986 ◽  
Vol 80 ◽  
Author(s):  
M. J. Maloney ◽  
A. J. Garratt-Reed ◽  
G. J. Yurek
Keyword(s):  
Grain Growth ◽  
Hot Isostatic Pressing ◽  
Primary Recrystallization ◽  
Second Phase ◽  
Gas Atomization ◽  
Second Phase Particles ◽  
Cold Rolled ◽  
Grain Growth Behavior ◽  
Rapidly Solidified ◽  
Twin Roll

AbstractA rapidly solidified Fe-10Cr-8Al alloy that contained a dispersion of very fine MnS and Al203 particles was produced by a gas atomization/twin-roll quenching technique. The RS particulates were consolidated by hot isostatic pressing, and the consolidated alloy was hot forged, and then hot and cold rolled. Grain growth took place during primary recrystallization of the alloy; however, once primary recrystallization was complete, the dispersion of second phase particles was effective in pinning alloy grain boundaries.

Recrystallization Processing of Cold-Rolled Nickel

2004 ◽  
Vol 819 ◽  
Author(s):  
I. Baker ◽  
H. Chang ◽  
J. Li
Keyword(s):  
Grain Growth ◽  
Isothermal Annealing ◽  
Secondary Recrystallization ◽  
Cube Texture ◽  
Rolling Texture ◽  
Primary Recrystallization ◽  
The Other ◽  
Columnar Grains ◽  
Cold Rolled ◽  
Initial Texture

AbstractWe have examined the effects of isothermal annealing, at a variety of temperatures, and directional annealing, under a range of conditions, on both primary recrystallization and secondary recrystallization in 90% cold-rolled 99.5% nickel of two different textures. The initial texture is shown to influence the rolling texture and, hence, the results of subsequent annealing. It was found that one alloy showed a cube texture after primary recrystallization, underwent abnormal grain growth upon annealing at high temperatures, and could be directionally (secondary) recrystallized to give large columnar grains. In contrast, the other alloy produce a weak cube texture after primary recrystallization, showed only normal grain growth upon annealing at higher temperatures, and could not be directionally annealed to produce columnar grains. The implications of these results are discussed for producing columnar grains.

scholarly journals Recrystallization Textures in Heavily Cold-Rolled Ni3Al Based Single Crystals

2010 ◽  
Vol 638-642 ◽  
pp. 1288-1293
Author(s):  
Masahiko Demura ◽  
Ya Xu ◽  
Toshiyuki Hirano
Keyword(s):  
Single Crystal ◽  
Grain Growth ◽  
Single Phase ◽  
Texture Evolution ◽  
Diffraction Method ◽  
Electron Backscattered Diffraction ◽  
Two Phase ◽  
Goss Texture ◽  
Cold Rolled ◽  
The Difference

Texture evolution during recrystallization and grain growth was examined for a Ni3Al/Ni two-phase single crystal (binary Ni-18 at.% Al) 83% cold-rolled, then compared with that for a Ni3Al single-phase single crystal (Ni-24 at.% Al). The cold-rolled single crystal had a sharp {110}<001> (Goss) texture. When it was recrystallized at 873K, the texture changed into a complicated one consisting of several components. Most of them had a special rotation relationship to the original Goss texture, i.e. 40˚ about <111>, which special relationship was similarly observed in the single-phase case. The 40˚<111> texture became shaper with no quantitative change as the grain growth proceeded. This high stability of the recrystallized texture contrasted with the single-phase case in which the authors previously found that the texture returned to the original Goss texture. The difference was discussed based on the orientation analysis by an electron backscattered diffraction method.

Structural Evolution of IF Steel during Annealing after ECAP

2004 ◽  
Vol 467-470 ◽  
pp. 1295-1300 ◽  
Author(s):  
Joke De Messemaeker ◽  
Bert Verlinden ◽  
Jan Van Humbeeck
Keyword(s):  
Grain Size ◽  
Grain Growth ◽  
Microstructural Evolution ◽  
Structural Evolution ◽  
Equivalent Strain ◽  
Primary Recrystallization ◽  
If Steel ◽  
Angular Pressing ◽  
Continuous Recrystallization ◽  
Bimodal Grain Size

IF steel processed by equal channel angular pressing to an equivalent strain of 9.2 via route BA was annealed for different times at 500°C and 600°C. At both temperatures the microstructural evolution shows continuous recrystallization followed by grain growth, in absence of primary recrystallization. At 600°C a slightly bimodal grain size distribution develops.

Recent Advances in the Simulation of Recrystallization and Grain Growth

2007 ◽  
Vol 558-559 ◽  
pp. 3-12 ◽  
Author(s):  
Günter Gottstein ◽  
Lasar S. Shvindlerman ◽  
Mischa Crumbach ◽  
L.A. Barrales-Mora
Keyword(s):  
Modeling And Simulation ◽  
Grain Growth ◽  
Microstructural Evolution ◽  
Primary Recrystallization ◽  
Engineering Properties ◽  
Fine Grained ◽  
Optimal Processing ◽  
Recent Developments ◽  
Specific Material ◽  
Quantum Mechanical Computations

Modeling and simulation of recrystallization, grain growth, and related phenomena are important tools for the fundamental understanding of microstructural evolution and prediction of engineering properties. In particular for ultra fine grained and nanocrystalline materials proper account of microstructural evolution is essential for the optimal processing of these materials. It is shown that for modeling of softening phenomena it is important to discriminate between discontinuous primary recrystallization and discontinuous grain growth owing to their quite different underlying physics. Recent developments in recrystallization modeling and simulation of grain growth are addressed, in particular nucleation of recrystallization and junction effects in grain growth. Major progress is also expected from atomistic modeling and quantum-mechanical computations for making available specific material properties.

Texture Development of Ni3Al Thin Foils during Recrystallization and Grain Growth

2004 ◽  
Vol 467-470 ◽  
pp. 447-452 ◽  
Author(s):  
Masahiko Demura ◽  
Kyosuke Kishida ◽  
Ya Xu ◽  
Toshiyuki Hirano
Keyword(s):  
Grain Growth ◽  
Texture Evolution ◽  
Boundary Energy ◽  
Primary Recrystallization ◽  
Goss Texture ◽  
Preferential Growth ◽  
X Ray ◽  
Thin Foils ◽  
Cold Rolled ◽  
The Difference

The texture evolution of 83% cold-rolled Ni3Al foils during recrystallization was examined through heat treatments at 600 °C, 800 °C, and 1000 °C for 30 min. X-ray texture measurements revealed that the texture changed from the as-rolled Goss to a transitional complicated one by primary recrystallization and eventually returned to the Goss texture during grain growth. The SEM-EBSD analysis revealed that the return to the Goss texture was accompanied by the decrease of random boundaries (RBs) and the increase of S1 boundaries. The preferential growth of the Goss-oriented grains was explained by the difference in the grain boundary energy between the RBs and S1, based on the observed grain-orientation maps.

Grain Growth Texture Evolution in Zirconium (Zr702) and Commercially Pure Titanium (T40)

2004 ◽  
Vol 467-470 ◽  
pp. 441-446 ◽  
Author(s):  
Nathalie Bozzolo ◽  
N. Dewobroto ◽  
Thierry Grosdidier ◽  
Pierre Barbéris ◽  
Francis Wagner
Keyword(s):  
Grain Growth ◽  
Texture Evolution ◽  
Pure Titanium ◽  
Growth Conditions ◽  
Primary Recrystallization ◽  
Commercially Pure Titanium ◽  
High Annealing Temperature ◽  
Grain Sizes ◽  
High Annealing ◽  
Cold Rolled

Primary recrystallization of a 80% cold–rolled T40 or Zr702 sheets leads to equiaxed microstructures. Subsequently, only normal grain growth takes place in T40 while a few grains can grow abnormally after sufficient time at high annealing temperature (close to the transus) in Zr702. The grain sizes reached after extended grain growth at moderate temperatures in Zr702 are smaller than in T40. The presence of precipitates in Zr702 is probably responsible for this and also for the abnormal phenomena observed at high temperature in this material. The texture changes occurring in both materials under normal grain growth conditions (often roughly described as “30° rotation around c axes”) are due to the development of the largest grains produced by the primary recrystallization. These large grains are preferentially oriented around {j1=0°, F=30°, j2=30°} for T40 and around {j1=0°, F=25°, j2=30°} for Zr702, orientations which become predominant after extended grain growth.

scholarly journals Texture Memory Effect in Heavily Cold-Rolled Ni3Al Single Crystals

2007 ◽  
Vol 539-543 ◽  
pp. 1513-1518 ◽  
Author(s):  
Masahiko Demura ◽  
Ya Xu ◽  
Toshiyuki Hirano
Keyword(s):  
Single Crystals ◽  
Orientation Relationship ◽  
Grain Growth ◽  
Memory Effect ◽  
Texture Evolution ◽  
Primary Recrystallization ◽  
Drastic Change ◽  
Texture Memory ◽  
Cold Rolled ◽  
Two Stages

The paper presented the texture evolution during primary recrystallization and following grain growth in the heavily cold-rolled Ni3Al single crystals. It turned out that the texture evolution occurred in the two stages. First, primary recrystallization caused the drastic change of the as-rolled texture. Then, as grain growth proceeded, the texture returned to the same one as the as-rolled textures. This texture return can be designated as Texture memory effect. The mechanism of the texture memory effect was discussed based on the analysis of the orientation relationship between the as-rolled and the primary recrystallization textures.

Rapid projection of crystal grain orientation distribution in aluminium alloy sheets by synchrotron X-ray diffraction

1998 ◽  
Vol 5 (3) ◽  
pp. 1139-1140
Author(s):  
K. Kawasaki ◽  
M. Koizumi ◽  
H. Inagaki
Keyword(s):  
Aluminium Alloy ◽  
Grain Growth ◽  
Grain Orientation ◽  
Growth Process ◽  
Orientation Distribution ◽  
Primary Recrystallization ◽  
X Ray Diffraction ◽  
X Ray ◽  
Cold Rolled ◽  
Small Grains

An investigation of the primary recrystallization and the grain growth process of aluminium alloy sheets has been carried out using a method for rapid projection of the crystal grain orientation distribution. It is found that the projected pattern is continuous in the cold-rolled state. When the sheet is annealed, tiny diffraction spots or small grains appear. The addition of Mg greatly alters the sizes and number of grains, and the orientation of the grains in sheets.

Sign in / Sign up

Export Citation Format

Share Document