Influence of constraint condition on rolling behavior of magnesium alloy at low temperatures

Kim, Se Jong; Kim, Dae-Yong; Lee, Young-Seon; Oh, Chang Woo; Lee, Keunho; Han, Heung Nam

doi:10.1007/s12540-015-4108-4

Cited by 8 publications

(2 citation statements)

References 26 publications

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“…However, in the present study, as well in the literature [9,[29][30][31], the results show that, irrespective of the parameters such as pass reduction and rolling rate, there is edge cracking when the rolling has proceeded beyond a certain number of passes.…”

Section: Accepted M Manuscriptsupporting

confidence: 60%

Deformation mechanism and microstructure evolution during on-line heating rolling of AZ31B Mg thin sheets

Pan

Zeng

Jiang

et al. 2017

Materials Characterization

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An AZ31B sheets were processed by on-line heating rolling (ON-LHR) in five passes. Roll and sheets temperatures were 473 K and 533 K, respectively. The grain size was reduced in the first three roll passes, to a minimum of 4.1 μm, due to dynamic recrystallization, and coarsened in the last two passes due to a combination of dynamic recrystallization and grain growth. The yield strength, ultimate tensile strength and elongation to fracture reached 232 MPa, 347 MPa and 21% in the rolling direction. The maximum yield strength occurred after the fourth pass. The maximum is attributed to the small grain size and the formation of networks of sub-grains and deformed grains. The rolled sheets had a strong basal texture, which was largely unchanged with the number of roll passes. The existence of the strong texture after rolling indicated discontinuous dynamic recrystallization.

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Section: Accepted M Manuscriptsupporting

confidence: 60%

Deformation mechanism and microstructure evolution during on-line heating rolling of AZ31B Mg thin sheets

Pan

Zeng

Jiang

et al. 2017

Materials Characterization

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“…15 Wu T et al 12 selected Al alloy as a cover to pack ZE20, and the results showed that ZE20 sheets exhibited a fine recrystallized microstructure, good ductility, and weak texture. Kim et al 24 had proved that constraint placed on the Mg alloy by the aluminum (Al) alloy could impede the initiation of edge cracks in the sheet during rolling, and the main reason is that the aluminum reduces the tensile stress generated along the rolling direction near the edge region of the Mg alloy. Niu HZ et al 25 had used stainless-steel as a cover for Ti alloy during rolling and got full DRX microstructures.…”

Section: Introductionmentioning

confidence: 99%

Effect of single-pass large-strain tube pack-rolling on forming AZ61 alloy strip

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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In this paper, a novel manufacturing strategy named as tube pack-rolling (TPR) was proposed. In the process, Mg-6Al-1Zn-0.3Mn (wt%) (AZ61) bar was packed by stainless-steel tube to be rolled at elevated temperature. In order to compare the advantage of TPR, AZ61 bar was also rolled without stainless-steel tube which is named naked-rolling (NR). The stainless-steel was picked as the pack material because of its high strength and hardness which can completely restrain the deformation of magnesium alloy. Numeral simulations were employed to analyze the strip shape and formability. The optimized parameters of contour control are discussed. Tensile tests at room temperature show that specimen rolled by TPR at 673 K exhibit good comprehensive mechanical properties, and the yield strength and ultimate tensile strength reached 213 MPa and 305 MPa with the elongation of 23.2%. The microstructure was investigated by optical microscopes (OM) and electron back scattered diffraction (EBSD). The AZ61 alloy strip rolled by TPR at 673 K exhibited homogenous almost fine dynamically recrystallized equiaxed grains (about 5 µm) with a weak texture. Meanwhile the microstructure evolution mechanism also shows the temperature has significant effect on TPR processing.

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Effects of Zn content and initial grain size on double peak basal textures of Mg-Zn-Al alloys

Choi

Shin

2017

Met. Mater. Int.

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Influence of constraint condition on rolling behavior of magnesium alloy at low temperatures

Cited by 8 publications

References 26 publications

Deformation mechanism and microstructure evolution during on-line heating rolling of AZ31B Mg thin sheets

Deformation mechanism and microstructure evolution during on-line heating rolling of AZ31B Mg thin sheets

Effect of single-pass large-strain tube pack-rolling on forming AZ61 alloy strip

Effects of Zn content and initial grain size on double peak basal textures of Mg-Zn-Al alloys

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