Microstructure characterization of Al-cladded Al–Zn–Mg–Cu sheet in different hot deformation conditions

Liao, Bin; Wu, Xiaodong; Yan, Changjian; Liu, Zheng; Ji, Yan-li; Cao, Lingfei; Huang, Guangjie; Qing, Liu

doi:10.1016/s1003-6326(17)60191-2

Cited by 10 publications

(2 citation statements)

References 22 publications

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“…As for pre-aged samples, the yield strength increment due to dislocations strengthening contribution and the dislocation density are listed in table 4. It shows that the contribution difference of dislocation strengthening to the yield strength between the samples in pre-aged (along axial, along hoop and along radial) is negligible basically, so the yeild strength anisotropy caused by dislocation strengthening can be ignored after pre-aging stage.…”

Section: Dislocation Strengtheningmentioning

confidence: 99%

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Effect of regression and re-aging treatment on tensile yield strength anisotropy of 7050 aluminum alloy

Xie¹,

Yuan²

2022

Mater. Res. Express

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In this study, the evolution rule of yeild strength and microstructure along the axial, hoop and radial directions of 7050 aluminum alloy ring forging during Regression and re-aging (RRA) heat treatment was studied by using the experimental technology of tensile property test and transmission electron microscope (TEM) and Electron backscatter diffraction (EBSD) observation. During the RRA process, the evolution rule of intragranular and intergranular precipitates along axial, hoop and radial directions of 7050 aluminum alloy ring forging was described by establishing a model. After the pre-aging stage, the yield strength of samples along the axial, hoop and radial directions of forgings shows obvious anisotropy, and the anisotropy decreases gradually after regression and re-aging treatment. The results show that the cause of the larger yield strength anisotropy is the inhomogeneous size and distribution of precipitates after the pre-aging stage; After the regression stage, the cause of the reduction of the yield strength anisotropy is due to the homogeneous distribution of intragranular precipitates; After re-aging treatment, the reasons of further reduction of the yield strength anisotropy are because of more homogeneous distribution of intragranular precipitates and the discontinuous of intergranular precipitates.

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Section: Dislocation Strengtheningmentioning

confidence: 99%

“…7xxx series aluminum alloys are widely used in aviation field because of their low density, ultra-high strength and high toughness [1][2][3][4][5]. The mechanical properties of this kind of alloys mainly depend on the precipitation characteristics during aging.…”

Section: Introductionmentioning

confidence: 99%

Effect of regression and re-aging treatment on tensile yield strength anisotropy of 7050 aluminum alloy

Xie¹,

Yuan²

2022

Mater. Res. Express

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Microstructure and surface of 2A12 aluminum alloy cladded with pure aluminum after solution treatment

Zhang

Yan

et al. 2020

Rare Met.

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An investigation into the production of a large-scale automotive part included small features using hydraulic sequential forming method

Zhang

Lang

Sherkatghanad

et al. 2018

J Braz. Soc. Mech. Sci. Eng.

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Aiming at the requirement of the formability and the surface quality of the large-scale aluminum alloy such as AA6016-T4, utilized in the automotive component with complicated structures, a sequential forming process is proposed. This method consists of sheet hydroforming technology and local shaping with rigid tools. Firstly, according to the hydroforming process, the small curvature surfaces with excellent surface quality and the partial deformation of the local small features are obtained. After that, the method of local shaping with rigid tools is adopted and causes to reduce the equipment tonnage. In this research, the sequential forming process is studied on the basis of numerical simulations and experiments. At the same time, substituting the conventional mechanical test, the influences of different loading modes on the mechanical properties of the material are studied further from the viewpoint of the microstructure analysis. So when the different forming process is finished, the material in different areas is sampled and the microstructure evolution law is observed. The research results are illustrated that the excellent agreement is found through the analysis and the comparison of the wall thickness values on different measuring sections in the experiments and simulations results and the part with excellent quality is obtained. Meanwhile, it is found that the change degree of the microstructure of the small local features in the local shaping is more intense than the hydroforming process, and the grain sizes in the local shaping are smaller than the hydroforming process, and it is illustrated that the sequential forming is essential to the production of the aluminum alloy part with excellent surface quality and accurate structure size.

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Microstructure characterization of Al-cladded Al–Zn–Mg–Cu sheet in different hot deformation conditions

Cited by 10 publications

References 22 publications

Effect of regression and re-aging treatment on tensile yield strength anisotropy of 7050 aluminum alloy

Effect of regression and re-aging treatment on tensile yield strength anisotropy of 7050 aluminum alloy

Microstructure and surface of 2A12 aluminum alloy cladded with pure aluminum after solution treatment

An investigation into the production of a large-scale automotive part included small features using hydraulic sequential forming method

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