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ISSN : 1225-0562(Print)
ISSN : 2287-7258(Online)
Korean Journal of Materials Research Vol.19 No.5 pp.265-269

Through-Thickness Variation of Strain and Microstructure of AA5052 with Rolling Conditions During High Speed Hot Rolling

Lee, Seong-Hee


The through-thickness variations of strain and microstructure during high-speed hot rolled 5052 aluminum alloy sheet were investigated. The specimens were rolled at temperature ranges from 410 to 560˚C at a rolling speed of 15 m/s without lubrication and quenched into water at an interval of 30 ms after rolling. The redundant shear strain induced by high friction between rolls and the aluminum sheet was increased largely beneath the surface at a rolling reduction above 50%. Dynamic recrystallization occurred in the surface regions of the specimen rolled under conditions of high temperatures or high rolling reductions.

고속열간압연시 압연조건에 따른 AA5052의 두께방향으로의 변형량 및 미세조직 변화