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- W2358957866 abstract "Hot compression deformation of a high-speed rail screw spike steel TD16 was carried out on a Gleeble-3500 thermal simulation testing machine. The hot-plastic deformation behavior of the steel TD16 at different temperatures and strain rates was investigated. The effect of deformation temperature and strain rate on true stress-strain curves of the steel was examined. Combined with the observation of microstructure of the deformed steel at low strain rates,the true stress-strain curves were characterized. The results show that the peak flow stresses of the true stress-strain curves are sharply presented for the compression-deformed steel at low strain rates,indicating the occurring of the dynamic recrystallization. No obvious peak flow stress are observed for the steel deformed at high strain rates,which indicates the flow stress curves belong to the dynamic recovery,and no dynamic recrystallization occurs. A mathematical model of the peak flow stress constitutive relationship of the TD16 steel in the range of experimental conditions is established by regression analysis and calculation. The flow stress predicted by the constitutive equation is in good agreement with the experimental value with the maximum error of 7. 03%,which can be used to predict high-temperature flow behavior of the high-speed rail screw spike steel." @default.
- W2358957866 created "2016-06-24" @default.
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- W2358957866 date "2015-01-01" @default.
- W2358957866 modified "2023-09-25" @default.
- W2358957866 title "High-temperature plastic deformation behavior of high-speed rail screw spike steel TD16" @default.
- W2358957866 hasPublicationYear "2015" @default.
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