Strain rate effects on microstructure and texture evolution in cold-sheared Al-6 Mg alloys during low-temperature annealing

Cho, Chang‐Hee; Lee, Ji‐Woon; Son, Kwang‐Tae; Hyun, Soong‐Keun

doi:10.1016/j.jallcom.2021.161630

Cited by 5 publications

(5 citation statements)

References 31 publications

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“…Particularly, it was confirmed that Al-Mg alloys with high Mg content follow the brass-type texture evolution during a cold rolling process by Cho et al [ 8 , 9 , 10 , 11 ]. According to the research, the evolution of brass-type texture was observed in Al-6Mg alloy, and it was confirmed that it was due to the restriction of cross slip and acceleration of planar slip due to the high Mg content.…”

Section: Introductionmentioning

confidence: 66%

“…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%

“…For these reasons, the Al-Mg alloys have been widely investigated, but there are several problems to apply to the industrial area, such as low r-value, texture control, and stress corrosion cracking [ 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. In order to solve these problems, the addition of Mg content has been suggested by several researchers [ 8 , 9 , 10 , 11 ]. Mg addition is effective to control texture evolution, increase r-value, and change the grain boundary condition, which is favorable to resisting stress corrosion cracking.…”

Section: Introductionmentioning

confidence: 99%

“…Among those substitutional candidate materials, Al-Mg alloys are recognized as the best materials, specifically in the area of body sheets for vehicles or sheets for battery packs of electric cars, because of their properties, which Materials 2023, 16, 6260 2 of 16 are high strength, good ductility, and ease of fabrication [1,2]. For these reasons, the Al-Mg alloys have been widely investigated, but there are several problems to apply to the industrial area, such as low r-value, texture control, and stress corrosion cracking [3][4][5][6][7][8][9][10]. In order to solve these problems, the addition of Mg content has been suggested by several researchers [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

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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: Introductionmentioning

confidence: 66%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

Self Cite

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show abstract

“…The mechanical behavior of materials after rolling or extrusion deformation was different in different directions, which meant the anisotropy of mechanical properties [2]. Previous researchers have done some research on the anisotropy of the Al alloys [5][6][7][8][9][10][11]. Ye et al [11] studied the compression deformation behavior of 6063-T4 Al alloy extruded bar at 0°, 45°and 90°with the axis.…”

Section: Introductionmentioning

confidence: 99%

Study on anisotropic behavior of 7075 Al alloy after extrusion

Zhang

Wang

et al. 2022

Mater. Res. Express

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For an extrusion process of 7075 Al alloy, the extrusion direction of the initial blank is changed to study the mechanical properties of the formed plates and characterize their microstructure. The as-received bar is extruded 7075 Al alloy. The secondary extrusion deformation is along and perpendicular to the initial extrusion direction. The results show that the anisotropy of mechanical properties of the two samples decreases obviously after secondary deformation. The anisotropy of yield strength and ultimate tensile strength of ED90 sample is lower than that of ED0 sample, but the plastic anisotropy is slightly higher than that of ED0 sample. In addition, the recrystallized grain proportion of ED90 sample is high and the texture strength is low, so the Schmid factor in the three directions is similar. The tensile fracture mode of the two samples belongs to ductile fracture, but the morphology of dimple and the size of cleavage plane are slightly different.

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Precise calculation of crystallite size of nanomaterials: A review

Hassanzadeh-Tabrizi

2023

Journal of Alloys and Compounds

106

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Strain rate effects on microstructure and texture evolution in cold-sheared Al-6 Mg alloys during low-temperature annealing

Cited by 5 publications

References 31 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

Study on anisotropic behavior of 7075 Al alloy after extrusion

Precise calculation of crystallite size of nanomaterials: A review

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