발간논문

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Vol.39, No.5, 546 ~ 553, 2001
Title
Mechanical Behaviors : Mechanical Properties of A1100 Aluminum Alloy Sheets Manufactured by Accumulative Roll Bonding ( ARB ) Process
김향욱Hyoung Wook Kim,진선화Sun Hwa Jin,강석봉Suk Bong Kang
Abstract
In this study, the microstructure and mechanical properties of A1100 aluminum alloy sheets manufactured by the Accumulative Roll Bonding(ARB) process were investigated. Hot rolled A1100 sheets were highly strained up to a true strain of 6.32 at room temperature by the ARB process. These sheets were recrystallized at the temperature range of 150℃ to 400℃ for 1hr. The ARB process was repeated up to 6 cycles and well bonded sheets were obtained successfully. The hardness and tensile strength of 6th ARBed specimen(true strain : 6.32) are three times higher than those of a hot rolled sheet. After recrystallization treatment at 200℃, the specimen has ultra-fine grain structures with grain size of less than 1 ㎛. In case of annealing at 300℃ for 1hr., the microstructures of the specimens consist of fully recrystallized grain structure with the grain size less than 7 ㎛.
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