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The residual stresses are developed in aluminum alloy plates from different upstream manufacturing processes, such as skin-pass rolling, quenching, stretching, etc. [3]. The primary method for predicting residual stresses in aluminum plates is performed by numerical simulation
In this study, using FEM three different plates of size 1000mm×4000mm×30mm/50mm/80mm are immersion quenched, then stretched by 3.0%. In the stretching models, corresponding to the
1 nov 2012 Quenched 7000 series aluminum alloy thick plates are usually stretched to release quenching-caused residual stresses through leading uniform deformation from 1% to 3% in the
Stretching is the sheet metal forming process where the punch which creates the part shape forces the sheet metal to thin since lock beads prevent metal flow inward from the flange area. In
The mechanism of mechanical stretch method is to use the external plastic deformation to coordinate the uniform plastic deformation produced in quenching process. In practical
Therefore, the stresses are relieved by applying a uniform plastic strain, which for rolled plate involves uniaxially stretching in the rolling direction from 1.5% to 3% strain and carries the Tx51
1 ago 2014 In this study, the influences of non-uniform factors on residual stresses in aluminum alloy thick plates during the quenching and stretching processes are
4 gen 2002 Through-thickness residual-stress profiles in rolled 7050-T74 aluminum plate were measured before and after stress relief by stretching (-Tx51). Measurement required adapting
16 feb 2019 The obtained results show the influence of the quenching conditions and of the stretch rate on the residual stresses the 6061 aluminum alloy plates. Moreover the reduction of
1 gen 2014 To investigate the effectiveness of the mesh aspect ratio on the accuracy of simulating stretch forming, the mesh size was varied from 6.25 to 25 mm. The dynamic explicit
1 gen 2012 — The effect of the pre-deformation of rolling combined with stretching on the stress corrosion cracking resistance of aluminum alloy 2519A was studied by means of the slow strain rate technique at 10 −6 s −1.The tensile strength and stress corrosion index of the alloy plate with 7% rolling plus 3% perpendicular stretching were 481 MPa and
1 gen 2012 — The effect of the pre-deformation of rolling combined with stretching on the stress corrosion cracking resistance of aluminum alloy 2519A was studied by means of the slow strain rate technique at 10 −6 s −1.The tensile strength and stress corrosion index of the alloy plate with 7% rolling plus 3% perpendicular stretching were 481 MPa and
1 nov 2012 — A typical stretching process of aluminum thick plate is shown in Fig. 1 in which the coordinate system used in the model is also depicted. The plate is under the tension load, which is uniformly distributed at each end of the plate along the rolling direction (x-direction). L, W and T are length, width and thickness of the plate
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25 mag 2021 — The mechanical anisotropy of AA7B04 aluminum plate in thickness direction has an impact on the springback prediction in multi-point bending. A modelling method with consideration of the texture gradient of the plate in thickness direction was proposed to predict the springback in the paper. The plate was divided into a number
12 gen 2016 — The multilayered 7XXX series aluminum alloy was impacted by 7.62 mm ogival projectiles at velocities ranging from 787 to 851 ms−1. The deformed microstructure under various impacting velocities and fracture surfaces of different sections were investigated at different physical scales to determine the process of failure. Optical
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15 gen 2009 — The model of single pre-tension method is shown in Fig. 1.A pre-load F is applied to the both edges perpendicular to the weld (longitudinal direction) before the welding starts, and its direction is parallel to the welding direction. The load F must be less than yield strength of the material σ s to keep the weldments in elastic stage. .
13 apr 2021 — The article established a modelling that predicted and measured the quenching and pre-stretching stress in 7050 aluminum alloy thick plate in order to make the alloy suitable enough for manufacturing in the aerospace industries. The results show that both the rolling direction component stress and the transverse direction
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