scholarly journals Deformation-texture evolution in deep drawing of cold-rolled 3104 aluminum alloy sheet

2019 ◽  
Vol 69 (8) ◽  
pp. 387-392
Author(s):  
Ryohei Kobayashi ◽  
Tomoyuki Kudo ◽  
Hiroki Tanaka
Keyword(s):  
Aluminum Alloy ◽  
Deep Drawing ◽  
Texture Evolution ◽  
Deformation Texture ◽  
Alloy Sheet ◽  
Aluminum Alloy Sheet ◽  
Cold Rolled

Microstructure and Texture Evolution of 2024 Aluminum Alloy Sheet under Different Loading Conditions

2018 ◽  
Vol 920 ◽  
pp. 236-243
Author(s):  
Peng Zhou ◽  
Lei Deng ◽  
Xin Yun Wang
Keyword(s):  
Aluminum Alloy ◽  
Strain Rate ◽  
Tensile Deformation ◽  
Texture Evolution ◽  
Deformation Texture ◽  
Alloy Sheet ◽  
Loading Conditions ◽  
Aluminum Alloy Sheet ◽  
2024 Aluminum Alloy ◽  
Goss Texture

To study microstructure and texture evolution of 2024 aluminum alloy sheet under different loading conditions, thermal tensile and compression experiments of 2024 aluminum alloy rolled sheets were carried out at temperatures ranging from 300 °C to 450 °C and under strain rates ranging from 0.001 s-1 to 0.1 s-1. During tensile deformation, the HABs of original grains are directly elongated until abruption. DRX process occurs during compression. Dislocations appear during deformation, migrate and accumulate into LABs, and then rotate into HABs to form new grain.The three-dimensional orientation distribution functions (ODFs) in different stress states were measured, with related texture types and distribution laws compared. According to ODFs with a constant φ2, the deformation texture of {011} <100>Goss texture is gradually strengthened during thermal tension at high temperature and low strain rate (450°C/0.001s-1). The deformation texture of {011} <100>Goss texture is weakened with the strain increasing. Furthermore, the increase of deformation temperature or the decrease of strain rate slows down the weakening process of {011} <100> Goss texture, which is attributed to the recrystallization behavior during tensile deformation. Besides, since the recrystallization process proceeds more completely during hot compression, it produces a quasi-random texture.

NUMERICAL SIMULATION OF DEEP DRAWING PROCESS OF ALUMINUM ALLOY SHEET USING CRYSTAL PLASTICITY

2008 ◽  
Vol 22 (31n32) ◽  
pp. 5901-5906
Author(s):  
JUNG GIL SHIM ◽  
YOUNG TAG KEUM
Keyword(s):  
Numerical Simulation ◽  
Aluminum Alloy ◽  
Crystal Plasticity ◽  
Deep Drawing ◽  
Texture Evolution ◽  
Material Model ◽  
Alloy Sheet ◽  
Drawing Process ◽  
Aluminum Alloy Sheet ◽  
Deep Drawing Process

In this study, the FEM material model based on the crystal plasticity is introduced for the numerical simulation of deep drawing process of A5052 aluminum alloy sheet. For calculating the deformation and stress in a crystal of aluminum alloy sheet, Taylor's model is employed. To find the texture evolution, the crystallographic orientation is updated by computing the crystal lattice rotation. In order to verify the crystal plasticity-based FEM material model, the strain distribution and the draw-in amount are compared with experimental measurements. The crystal FEM strains agree well with measured strains. The comparison of draw-in amount shows less 1.96% discrepancy. Texture evolution depends on the initial texture.

Effect of Lubrication Conditions on the Forming Limit of Deep Drawing of 6061 Aluminum Alloy Sheet

2019 ◽  
Vol 944 ◽  
pp. 85-91
Author(s):  
Yan Qi Wang ◽  
Yong Qi Cheng ◽  
Peng Zhang ◽  
Gan Luo ◽  
Peng Bin Li ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Sheet Metal Forming ◽  
Deep Drawing ◽  
Metal Forming ◽  
Alloy Sheet ◽  
Forming Limit ◽  
Oil Lubrication ◽  
Aluminum Alloy Sheet ◽  
Ptfe Film ◽  
6061 Aluminum Alloy

With the development of lightweight vehicles, aluminum alloy sheets are increasingly used in the automotive field. However, the aluminum alloy sheet has poor forming performance at room temperature. Therefore, how to improve the sheet metal forming performance of aluminum alloy sheet has become one of the current research hotspots. In this paper, the effects of different lubricants on the deep drawing forming properties of 6061 aluminum alloy sheets were studied by cupping experiments. The effects of lubricants on the deep drawing of sheet metal forming and the wall thickness of cups after deep drawing were explored. The results show that under the condition of drawing speed of 3MPa and 200mm/min, the ultimate drawing ratio of the sheet under oil lubrication is 1.92, and the PTFE film is 2.16. Grease and graphite lubrication are respectively 2.12 and 2.03, using PTFE film lubrication can increase by about 10% contrast with the oil lubrication. The measurement of the wall thickness of the cup under the forming limit state shows that the position with the largest reduction rate appears in the rounded transition zone, and the wall portion of the cylindrical member increases with the height of the wall, and the thickness from the bottom of the cup to the bottom of the cup. The edges all show a trend of decreasing first and then increasing.

Analysis of Nonisothermal Deep Drawing of Aluminum Alloy Sheet With Induced Anisotropy and Rate Sensitivity at Elevated Temperatures

2013 ◽  
Vol 136 (1) ◽  
Author(s):  
Kamyar Ghavam ◽  
Reza Bagheriasl ◽  
Michael J. Worswick
Keyword(s):  
Aluminum Alloy ◽  
Strain Rate ◽  
Deep Drawing ◽  
Elevated Temperatures ◽  
Tensile Tests ◽  
Alloy Sheet ◽  
Material Behavior ◽  
Aluminum Alloy Sheet ◽  
Rate Dependency ◽  
Strain Rate Dependency

In this paper, a finite element model is developed for 3000 series clad aluminum alloy brazing sheet to account for temperature and strain rate dependency, as well as plastic anisotropy. The current work considers a novel implementation of the Barlat YLD2000 yield surface in conjunction with the Bergstrom hardening model to accurately model aluminum alloy sheet during warm forming. The Barlat YLD2000 yield criterion is used to capture the anisotropy while the Bergstrom hardening rule predicts the temperature and strain rate dependency. The results are compared with those obtained from experiments. The measured stress–strain curves of the AA3003 aluminum alloy sheet at elevated temperatures and different strain rates are used to fit the Bergstrom parameters and measured R-values and directional yield stresses are used to fit the yield function parameters. Isothermal uniaxial tensile tests and nonisothermal deep drawing experiments are performed and the predicted response using the new constitutive model is compared with measured data. In simulations of tensile tests, the material behavior is predicted accurately by the numerical models. Also, the nonisothermal deep drawing simulations are able to predict the load–displacement response and strain distributions accurately.

Sign in / Sign up

Export Citation Format

Share Document