Influence of out-of-plane stretch forming induced different strain paths on micro-texture evolution, slip system activity and Taylor factor distribution in Al–Li alloy

2021 ◽  
pp. 142267
Author(s):  
Rahul Rakshit ◽  
Arnab Sarkar ◽  
Sushanta Kumar Panda ◽  
Sumantra Mandal
Keyword(s):  
Slip System ◽  
Texture Evolution ◽  
Taylor Factor ◽  
Stretch Forming ◽  
System Activity ◽  
Out Of Plane ◽  
Strain Paths

Modelling of Microstructure and Texture and the Resulting Properties during the Thermo-Mechanical Processing of Aluminium Sheets

2006 ◽  
Vol 519-521 ◽  
pp. 1563-1568 ◽  
Author(s):  
Olaf Engler
Keyword(s):  
Texture Evolution ◽  
Mechanical Processing ◽  
Process Chain ◽  
Production Lines ◽  
Thermomechanical Process ◽  
Polycrystal Plasticity ◽  
History Of ◽  
Strain Paths ◽  
Aluminium Sheets ◽  
Evolution Of Microstructure

In order to predict the mechanical properties of Al sheet products, the evolution of microstructure and crystallographic texture along the process chain must be tracked. During the thermo-mechanical processing in commercial production lines the material experiences a complex history of temperature, time and strain paths, which results in alternating cycles of deformation and recrystallization with the associated changes in texture and microstructure. In the present paper the texture evolution of AA 3104 can body stock is modelled. In particular, the earing behaviour at final gauge is linked to the decisive steps of deformation and recrystallization along the thermomechanical process chain. For this purpose, the textures predicted by a comprehensive throughprocess model of the texture evolution during the thermo-mechanical production of Al sheet are input into a polycrystal-plasticity approach to simulate earing of the final gauge sheets.

Application of the VPSC Model to the Description of the Stress–Strain Response and Texture Evolution in AZ31 Mg for Various Strain Paths

2015 ◽  
Vol 137 (4) ◽  
Author(s):  
Nitin Chandola ◽  
Raja K. Mishra ◽  
Oana Cazacu
Keyword(s):  
Mechanical Response ◽  
Mechanical Test ◽  
Texture Evolution ◽  
Mean Field ◽  
Strain Curve ◽  
Temperature Deformation ◽  
Strain Response ◽  
Stress Strain ◽  
Self Consistent ◽  
Strain Paths

Accurate description of the mechanical response of AZ31 Mg requires consideration of its strong anisotropy both at the single crystal and polycrystal levels, and its evolution with accumulated plastic deformation. In this paper, a self-consistent mean field crystal plasticity model, viscoplastic self-consistent (VPSC), is used for modeling the room-temperature deformation of AZ31 Mg. A step-by-step procedure to calibrate the material parameters based on simple tensile and compressive mechanical test data is outlined. It is shown that the model predicts with great accuracy both the macroscopic stress–strain response and the evolving texture for these strain paths used for calibration. The stress–strain response and texture evolution for loading paths that were not used for calibration, including off-axis uniaxial loadings and simple shear, are also well described. In particular, VPSC model predicts that for uniaxial tension along the through-thickness direction, the stress–strain curve should have a sigmoidal shape.

Crystallographic Texture Evolution of a Zinc Sheet Subjected to Different Strain Paths

2017 ◽  
Vol 48 (6) ◽  
pp. 2858-2867 ◽  
Author(s):  
Fernando Schlosser ◽  
Claudio Schwindt ◽  
Valeria Fuster ◽  
Andrea Tommasi ◽  
Javier Walter Signorelli
Keyword(s):  
Crystallographic Texture ◽  
Texture Evolution ◽  
Zinc Sheet ◽  
Strain Paths

Grain shape effects on the slip system activity and on the lattice rotations

1986 ◽  
Vol 34 (11) ◽  
pp. 2139-2149 ◽  
Author(s):  
S. Tiem ◽  
M. Berveiller ◽  
G.R. Canova
Keyword(s):  
Slip System ◽  
Grain Shape ◽  
System Activity ◽  
Shape Effects

scholarly journals Calculation of the slip system activity in deformed zinc single crystals using digital 3-D image correlation data

2006 ◽  
Vol 86 (12) ◽  
pp. 795-805 ◽  
Author(s):  
J. N. Florando ◽  
M. Rhee ◽  
A. Arsenlis ◽  
M. M. LeBlanc ◽  
D. H. Lassila
Keyword(s):  
Slip System ◽  
Single Crystals ◽  
Image Correlation ◽  
System Activity ◽  
Correlation Data

scholarly journals Grain Coarsening and Texture Evolution of Pre-Stretched 2219 Aluminum Alloy Sheets during Subsequent Solution Treatment

Metals ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 530 ◽  
Author(s):  
Lihui An ◽  
Jiguang Li ◽  
Shijian Yuan
Keyword(s):  
Aluminum Alloy ◽  
Grain Growth ◽  
Texture Evolution ◽  
Solution Treatment ◽  
Optical Microscope ◽  
Stretch Forming ◽  
Forming Process ◽  
Deformation Degree ◽  
Grain Structures ◽  
2219 Aluminum Alloy

During the two-pass stretch forming process for manufacturing of thin-walled aluminum alloy sheet components, abnormal grain growth may happen if an improper pre-deformation degree was conducted before solution heat treatment, which is negative to the performance and surface quality of the final components. In order to overcome this problem, the effect of pre-stretching deformation was investigated on the change of grain structures of 2219 aluminum alloy sheets. The 2219 aluminum alloy sheets were pre-stretched with various deformation degrees, and then were heated to 540 °C for about 50 min for solution treatment. The grain structures before and after solution treatment were characterized using an optical microscope (OM) and electron back scattering diffraction (EBSD). Results show that the grains grew up gradually during the solution treatment with an increase of pre-stretching. The critical pre-stretching degree is about 3%. Once the pre-deformation exceeds 3%, the grain growth is significant, especially when it reaches 5%. Moreover, the pre-stretching has little influence on the orientation distribution. Some near a copper texture {112}<111> were generated as the pre-stretching degree was increased to 5%. All the results suggest that the pre-stretching before solution treatment cannot be larger than 3% in the two-pass stretch forming of a 2219 aluminum sheet.

Fabrication of TFA-MOD YBCO Films Using the Y2Ba1Cu1Ox and Ba3Cu5O8 Powders

2007 ◽  
Vol 534-536 ◽  
pp. 1601-1604
Author(s):  
Jun Hyung Lim ◽  
Seok Hern Jang ◽  
Kyung Min Yoon ◽  
Seung Yi Lee ◽  
Jin Ho Joo ◽  
...  
Keyword(s):  
Grain Size ◽  
Critical Current ◽  
Firing Temperature ◽  
Ybco Film ◽  
Texture Evolution ◽  
The Other ◽  
Critical Properties ◽  
Phase Purity ◽  
Out Of Plane ◽  
Second Phases

We fabricated YBCO film using a TFA-MOD method and evaluated the phase formation, texture evolution, and critical properties as a function of the firing temperatures. In order to enhance the reaction kinetics and to control the formation of the second phases, Y2Ba1Cu1Ox and Ba3Cu5O8 powders were used as precursors (the so called “211 process”), instead of Y-, Ba-, and Cu-based acetate, and dissolved in trifluoroacetic acid (TFA). The films were calcined at 460°C and then fired at 750°C-800°C in a 12.1% humidified Ar-O2 atmosphere. We found that the microstructure varied significantly with the firing temperature; the grain grew further and the film became denser as the firing temperature increased. The textures of all of the films were similar and mainly biaxial. On the other hand, the intensity of the major and minor texture components differed from each other. For the film fired at 775°C, the critical current was obtained to be 39 A/cm-width (corresponding critical current density is 2.0 MA/cm2), which was probably attributed to such factors as the enhanced phase purity and out-of-plane texture, the moderate film density and grain size, and crack-free surface.

scholarly journals Multiscale Finite Element Simulation of Forming Processes Based on Crystal Plasticity

2014 ◽  
Vol 611-612 ◽  
pp. 545-552
Author(s):  
Komi Soho ◽  
Farid Abed Meraim ◽  
Xavier Lemoine ◽  
Hamid Zahrouni
Keyword(s):  
Finite Element ◽  
Crystal Plasticity ◽  
Texture Evolution ◽  
Constitutive Models ◽  
Rolling Process ◽  
Finite Element Software ◽  
Software Packages ◽  
Element Simulation ◽  
Coupling Strategy ◽  
Strain Paths

For the numerical simulation of sheet metal forming processes, the commercial finite element software packages are among the most commonly used. However, these software packages have some limitations; in particular, they essentially contain phenomenological constitutive models and thus do not allow accounting for the physical mechanisms of plasticity that take place at finer scales as well as the associated microstructure evolution. In this context, we propose to couple the Abaqus finite element code with micromechanical simulations based on crystal plasticity and a self-consistent scale-transition scheme. This coupling strategy will be applied to the simulation of rolling processes, at different reduction rates, in order to estimate the evolution of the mechanical properties. By following some appropriately selected strain paths (i.e., strain lines) along the rolling process, one can also predict the texture evolution of the material as well as other parameters related to its microstructure. Our numerical results are compared with experimental data in the case of ferritic steels produced by ArcelorMittal.

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