Evaluation of the Microstructures and Mechanical Properties on Friction Welded A6063 Alloy

김은혜,; 조형환,; 송국현,

doi:10.3740/mrsk.2017.27.5.276

Cited by 5 publications

(3 citation statements)

References 9 publications

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“…A great number of studies have been conducted on ways to reduce the weight of automobiles because of the current interest in energy conservation and eco-friendliness [1][2][3][4][5][6][7][8]. An aluminum alloy sheet is a promising material for automotive body panels because of their benefits, including medium strength, good formability and lightweight [9][10][11]. It is also expected that substituting such Al alloys for steels will result in great improvements in energy economy, recyclability and life-cycle cost.…”

Section: Introductionmentioning

confidence: 99%

Effects of Stacking Number on Microstructure and Mechanical Properties for Cold Roll Bonding Process of Dissimilar Aluminum Alloy Sheets

Lee

2023

Korean J. Met. Mater.

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A cold roll-bonding (CRB) process is applied to study the effects of stacking number on the microstructure and mechanical properties of roll-bonded and age-treated Al sheets. Commercial AA1050 and AA6061 sheets with a thickness of 2 mm were stacked alternately on each other to two and four layers, and roll-bonded by multi-pass cold rolling. The roll-bonded Al sheets were then subjected to natural aging (T4) and artificial aging (T6) treatments. The as roll-bonded Al sheets showed a typical deformation structure, where the grains are elongated in the rolling direction regardless of the stacking number. However, after the T4 and T6 aging treatments, the Al sheets had a recrystallization structure consisting of coarse grains in both the AA5052 and AA6061 regions with different grain sizes in each. In addition, the sheets showed an inhomogeneous hardness distribution in the thickness direction, with higher hardness in AA6061 than in AA1050 after the T4 and T6 age treatments. The tensile strength of the T6-treated specimen was higher than that of the T4-treated one for both the 2 and 4-layer CRBs. In addition, both the tensile strength and elongation of the specimens processed by the 4-layer stack CRB were higher than those of the 2-layer stack CRB for all experimental conditions.

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Section: Introductionmentioning

confidence: 99%

Effects of Stacking Number on Microstructure and Mechanical Properties for Cold Roll Bonding Process of Dissimilar Aluminum Alloy Sheets

Lee

2023

Korean J. Met. Mater.

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“…Recently, lots of studies on lightweight of automobile have been done because of importance of the energy saving and green environment [1][2][3][4][5]. especially, the aluminum alloys for automotive body panel have been studied extensively because of their benefits such as medium strength, good formability and lightweight [6][7][8]. It is also expected that the substitution of such aluminum alloys for steels will result in great improvements in energy economy, recyclability and life-cycle cost.…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Jo,

Lee

2021

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and MeChanICal ProPertIes of four-layer staCk arB ProCessed CoMPlex aluMInuM sheet wIth annealIngThe four-layer stack accumulative roll bonding (ARB) process using AA1050, AA5052 and AA6061 alloy sheets is performed up to 2 cycles without a lubricant at room temperature. The sample fabricated by the ARB is a multi-layer complex aluminum alloy sheet in which the AA1050, AA5052 and AA6061 alloys are alternately stacked to each other. The changes of microstructure and mechanical properties with annealing for the-ARBed aluminum sheet are investigated in detail. The as-ARBed sheet shows an ultrafine grained structure, however the grain diameter is some different depending on the kind of aluminum alloys. The complex aluminum alloy still shows ultrafine structure up to annealing temperature of 250℃, but above 275℃ it exhibits a heterogeneous structure containing both the ultrafine grains and the coarse grains due to an occurrence of discontinuous recrystallization. This change in microstructure with annealing also has an effect on the change of the mechanical properties of the sample. Especially, the specimen annealed at 300℃ represents abnormal values for the strength coefficient K and work hardening exponent n value.

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“…Recently, lots of studies on lightweight of automobile have been done because of importance of the energy saving and green environment [1][2][3][4][5]. Especially, the aluminum alloys for automotive body panel have been studied extensively because of their benefits such as medium strength, good formability and lightweight [6][7][8]. It is also expected that the substitution of such aluminum alloys for steels will result in great improvements in energy economy, recyclability and life-cycle cost.…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Lee

2020

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A cold roll bonding process is applied to fabricate an AA6061/AA5052/AA6061/AA5052 multi-layer sheet. Two AA6061 and two AA5052 sheets with 2mm thickness are stacked alternately to each other, and reduced to a thickness of 2 mm by multi-pass cold rolling. The roll bonded multi-layer sheet is then hardened by natural aging (T4) and artificial aging (T6) treatments. The as roll-bonded sheet shows a typical deformation structure that the grains are elongated to the rolling direction. However, after T4 and T6 aging treatments, it has a recrystallization structure consisting of the coarse equiaxed grains in both AA5052 and AA6061 sheets. The as rolled material shows a lamella structure in which AA5052 and AA6061 sheets are stacked alternately to each other, having higher hardness in AA5052 than in AA6061. However, T4 and T6 aging treated materials show a different lamella structure in which the hardness of the AA6061 layers is higher than that of the AA5052 layers. The strengths of the T4 and T6 age-treated specimens are found to increase by 1.3 and 1.5 times respectively, compared to that of the starting material.

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Evaluation of the Microstructures and Mechanical Properties on Friction Welded A6063 Alloy

Cited by 5 publications

References 9 publications

Effects of Stacking Number on Microstructure and Mechanical Properties for Cold Roll Bonding Process of Dissimilar Aluminum Alloy Sheets

Effects of Stacking Number on Microstructure and Mechanical Properties for Cold Roll Bonding Process of Dissimilar Aluminum Alloy Sheets

Archives of Metallurgy and Materials

Archives of Metallurgy and Materials

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