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- W2380489448 abstract "A thermal simulation compression experiment was operated to examine the variation rules of V-N microalloy steel during high-temperature-plastic forming process on Gleeble-3800 thermal simulation tester.The model of deformational resistance and constitutive equation of the strain rate was built by analyzing stress-strain curve of V-N microalloy steel.The research results show that the flow stress of V-N microalloy steel has gone along with the increase of deformation before arriving at its peak,then it would gradually go down and reach a stable value in the context of lower strain rate and higher temperature.The relationship of strain rate,temperature and the peak stress can be represented by power exponential relationship.As a result,under the lower temperature range from 900 ℃ to 950 ℃,the stress index of 7.1,the hot deformation activation energy of 118-185 kJ/mol and the deformation mechanisms is power law creeping with dislocation core diffusion control;while under the higher temperature range from 1000 ℃ to 1150 ℃,the stress index of 6.6,the hot deformation activation energy of 125-285 kJ/mol and the deformation mechanism is power law creeping with dislocation core control." @default.
- W2380489448 created "2016-06-24" @default.
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- W2380489448 date "2012-01-01" @default.
- W2380489448 modified "2023-09-28" @default.
- W2380489448 title "Research on Plastic Deformation Behavior of V-N Microalloy Steel at High Temperature" @default.
- W2380489448 hasPublicationYear "2012" @default.
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