Effect of two steps annealing on the microstructure and dynamic strain aging behavior of Al-6Mg alloy

Saadat, Zahra; Moghanaki, Saeed Khani; Kazeminezhad, M.; Goodarzi, Milad; Afjeh, Seyed Mohammad Bagher Ghiasi

doi:10.1016/j.msea.2020.140097

Cited by 9 publications

(2 citation statements)

References 35 publications

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“…Another alternative is to relieve residual stresses by annealing the material during the rolling process. Annealing at temperatures below 320 °C [ 10 , 36 ], where recrystallization occurs, can reduce residual stresses and help to prevent the formation of defect seeds.…”

Section: Discussionmentioning

confidence: 99%

Study on Rolling Defects of Al-Mg Alloys with High Mg Content in Normal Rolling and Cross-Rolling Processes

Lim,

Hong,

Kim

et al. 2023

Materials

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This study investigated defect formation and strain distribution in high-Mg-content Al-Mg alloys during normal rolling and cross-rolling processes. The finite element analysis (FEA) revealed the presence of wave defects and strain localization-induced zipper cracks in normal cold rolling, which were confirmed by the experimental results. The concentration of shear strain played a significant role in crack formation and propagation. However, the influence of wave defects was minimal in the cross-rolling process, which exhibited a relatively uniform strain distribution. Nonetheless, strain concentration at the edge and center regions led to the formation of zipper cracks and edge cracks, with more pronounced propagation observed in the experiments compared to FEA predictions. Furthermore, texture evolution was found to be a crucial factor affecting crack propagation, particularly with the development of the Goss texture component, which was observed via electron backscattered diffraction analysis at bending points. The Goss texture hindered crack propagation, while the Brass texture allowed cracks to pass through. This phenomenon was consistent with both FEA and experimental observations. To mitigate edge crack formation and propagation, potential strategies involve promoting the formation of the Goss texture at the edge through alloy and process conditions, as well as implementing intermediate annealing to alleviate stress accumulation. These measures can enhance the overall quality and reliability of Al-Mg alloys during cross-rolling processes. In summary, understanding the mechanisms of defect formation and strain distribution in Al-Mg alloys during rolling processes is crucial for optimizing their mechanical properties. The findings of this study provide insights into the challenges associated with wave defects, strain localization, and crack propagation. Future research and optimization efforts should focus on implementing strategies to minimize defects and improve the overall quality of Al-Mg alloys in industrial applications.

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Section: Discussionmentioning

confidence: 99%

Study on Rolling Defects of Al-Mg Alloys with High Mg Content in Normal Rolling and Cross-Rolling Processes

Lim,

Hong,

Kim

et al. 2023

Materials

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“…to aluminum alloy can both upgrade the mechanical strength, corrosion resistance and hightemperature resistance of aluminum alloy [5,6]. The action mechanism of these iron group elements in aluminum alloy has the following possibilities [7,8]. The results show that in the process of aluminum alloy ingot casting, the particles containing iron group elements (dispersed phase) are formed, which hinder the dislocation movement in the alloy, Refine the grain and increase the ability of the alloy to bear strain concentration.…”

Section: Introductionmentioning

confidence: 99%

High-Pressure Solidification of Ternary Al-Ni-Sn Alloy

Yang

Wang

et al. 2022

Crystals

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The microstructure, phase composition and mechanical properties of ternary Al-5.4Ni-2Sn (mass fraction) alloy solidified under different high pressures were researched. The results show that the phase composition of the alloy solidified at different pressures is Al, Al3Ni and β-Sn. The thermodynamic phase diagram of the ternary alloy Al-5.4Ni-2Sn was calculated under the equilibrium condition. The results demonstrate that the solidification process is as follows: L→Al3Ni→(α-Al + Al3Ni)eutectic→(α-Al + Al3Ni + β-Sn)eutectic. The hardness values of α-Al phase at ambient pressure, 2 GPa and 4 GPa are 1.5 GPa, 1.62 GPa and 1.99 GPa, respectively. This is an increase of 8% and 32.7%, respectively. The hardness of β-Sn phase decreases by about 31.2% at 4 GPa. When the deformation is 30%, the compressive strength at ambient pressure, 2 GPa and 4 GPa is 538.1 MPa, 1403.2 MPa and 1547.9 MPa, respectively. The compressive strength under high pressure increased by 160.85% and 187.7%, respectively.

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Influence of Boron on the Flow Behavior of Hot Stamping Steel under Various Warm Working Conditions

Sajan

Amirthalingam

Chakkingal

2022

J. of Materi Eng and Perform

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Effect of two steps annealing on the microstructure and dynamic strain aging behavior of Al-6Mg alloy

Cited by 9 publications

References 35 publications

Study on Rolling Defects of Al-Mg Alloys with High Mg Content in Normal Rolling and Cross-Rolling Processes

Study on Rolling Defects of Al-Mg Alloys with High Mg Content in Normal Rolling and Cross-Rolling Processes

High-Pressure Solidification of Ternary Al-Ni-Sn Alloy

Influence of Boron on the Flow Behavior of Hot Stamping Steel under Various Warm Working Conditions

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