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Hot Deformation Behavior of 00Cr23Ni4N Duplex Stainless Steel at High Strain Rate

LI Guo-ping

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Abstract

The hot compressive deformation behavior of 00Cr23Ni4N duplex stainless steel(DSS) was performed on Gleeble-3800 thermal-mechanical simulator in the range of deformation temperature from 900 to 1150℃,strain rate from 5 to 50s-1.A constitutive relationship of peak stress described by Zener-Hollomon(parameter Z) was formulated with Sellars' hyperbolic sine model.The results show that the hot flow stress of 00Cr23Ni4N DSS declines dramatically as increasing deformation temperatures or decreasing strain rates.When deforming temperature from 1100 to 1150℃,the steel presents the good hot workability.The stress exponent 2.6 and hot deformation activation energy 263.4kJ/mol of 00Cr23Ni4N DSS are determinated by means of regression analysis.It reveals that parameter Z can effectively depict the rheologic behavior of the tested steel.

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What this paper is about

The hot compressive deformation behavior of 00Cr23Ni4N duplex stainless steel(DSS) was performed on Gleeble-3800 thermal-mechanical simulator in the range of deformation temperature from 900 to 1150℃,strain rate from 5 to 50s-1.A constitutive relationship of peak stress described by Zener-Hollomon(parameter Z) was formulated with Sellars' hyperbolic sine model.The results show that the hot flow stress of 00Cr23Ni4N DSS declines dramatically as increasing deformation temperatures or decreasing strain rates.When deforming temperature from 1100 to 1150℃,the steel presents the good hot workability.The stress exponent 2.6 and hot deformation activation energy 263.4kJ/mol of 00Cr23Ni4N DSS are determinated by means of regression analysis.It reveals that parameter Z can effectively depict the rheologic behavior of the tested steel.

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Available abstract

The hot compressive deformation behavior of 00Cr23Ni4N duplex stainless steel(DSS) was performed on Gleeble-3800 thermal-mechanical simulator in the range of deformation temperature from 900 to 1150℃,strain rate from 5 to 50s-1.A constitutive relationship of peak stress described by Zener-Hollomon(parameter Z) was formulated with Sellars' hyperbolic sine model.The results show that the hot flow stress of 00Cr23Ni4N DSS declines dramatically as increasing deformation temperatures or decreasing strain rates.When deforming temperature from 1100 to 1150℃,the steel presents the good hot workability.The stress exponent 2.6 and hot deformation activation energy 263.4kJ/mol of 00Cr23Ni4N DSS are determinated by means of regression analysis.It reveals that parameter Z can effectively depict the rheologic behavior of the tested steel.

Key concepts: Materials science, Strain rate, Deformation (meteorology), Flow stress, Duplex (building), Composite material, Metallurgy, Atmospheric temperature range

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