Abstract：The hot deformation characteristics of shipbuilding steel EH47 were studied in hot compression tests by the thermal mechanical simulator with Gleeble-3800. The testing conditions were that the maximum strain was 0.7， the deformation temperatures were 950， 1000， 1050， 1 100 and 1 150 ℃， and the strain rates were 0.1， 0.5， 1， 5 and 10 s－1. The processing map was drawn out based on a series of testing data and formulas. The comparison of microstructures with different compression parameters showed that the best compression parameter was （1 000±10） ℃ with 0.1 s－1， the rate of power dissipation—[η]in this region was greater than 0.62， and the dynamically recrystallized grains were finer. The parameter of instability zone located in 950-1 050 ℃ with 0.5-2 s－1， where less amount of dynamically recrystallized grains appeared and the grain sizes were uneven. Therefore， the instability zone should be avoided during heating processing. The best rolling parameters that the deformation temperature was 1 000 ℃ and the strain rate was 0.1 s－1， were determined with formulas and the best parameters from the processing map.
孙德顺，陈益华，张 珂，岑 风. EH47船板钢热加工图的建立[J]. 钢铁, 2015, 50(11): 93-98.
SUN De-shun，CHEN Yi-hua，ZHANG Ke，CEN Feng. Establishment of the hot processing map of shipbuilding steel EH47. Iron and Steel, 2015, 50(11): 93-98.
Prasad Y V R K, Gegel H L, Doraivelu S M, et al.Modeling of dynamic material behavior in hot deformation: forging of Ti-6242[J].Metallurgical Transactions A, 1984, 15(10):1883-1892
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Prasad Y V R K, Gegel H L, Doraivelu S M, et al.Modeling of dynamic material behavior in hot deformation: forging of Ti-6242[J].Metallurgical Transactions A, 1984, 15(10):1883-1892
2015, Vol. 50 
