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In this work, the finite element method simulated the symmetrical hot rolling process of 7050 aluminum alloy plate. The simulation result show that different thickness layers of 7050 aluminum alloy plate experienced different temperature and strain history in the rolling process, which leads to the difference of recrystallization fraction along the thickness direction and affects the distribution of grain size. The grain size of 7050 aluminum alloy rolled plate was obtained by thedoi:10.3390/met10040515 fatcat:3akmq4b32vh6xhsyltam6nqozm