Thermal Flow Stress Constitutive Equation of Cr9Mo High-alloy Steel

ZHOU Bin; SHEN Yu; CHEN Jun; CUI Zhen-shan

Materials and Mechanical Engineering > 2009 > 33(9): 17-20.

ZHOU Bin, SHEN Yu, CHEN Jun, CUI Zhen-shan. Thermal Flow Stress Constitutive Equation of Cr9Mo High-alloy Steel[J]. Materials and Mechanical Engineering, 2009, 33(9): 17-20.

Citation:

ZHOU Bin, SHEN Yu, CHEN Jun, CUI Zhen-shan. Thermal Flow Stress Constitutive Equation of Cr9Mo High-alloy Steel[J]. Materials and Mechanical Engineering, 2009, 33(9): 17-20.

Citation:

ZHOU Bin, SHEN Yu, CHEN Jun, CUI Zhen-shan. Thermal Flow Stress Constitutive Equation of Cr9Mo High-alloy Steel[J]. Materials and Mechanical Engineering, 2009, 33(9): 17-20.

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Thermal Flow Stress Constitutive Equation of Cr9Mo High-alloy Steel

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Received Date: June 19, 2009

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The hot compressive experiment of Cr9Mo high-alloy steel was carried out on Gleeble-1500D thermo-simulation machine.The hot plastic behavior of the steel was investigated at temperatures ranging from 1 173 to 1 473 K and strain rates from 10-3-1 s-1.Based on the theory of the classical stress-dislocation relation and the kinematics of the dynamic recrystallization,the flow stress constitutive equations in the work hardening-dynamical recovery stage and dynamical recrystallization stage were established for Cr9Mo steel,respectively.The stress-strain curves of Cr9Mo steel predicted by the established models were in basic agreement with experimental results,indicating that the equation could predict the high temperature rheological behevior.
- Cr9Mo high alloy steel,
- dynamic recovery,
- dynamic recrystallization,
- flow stress models

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