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TECHNICAL PAPERS

The Modeling of Unusual Rate Sensitivities Inside and Outside the Dynamic Strain Aging Regime

[+] Author and Article Information
Kwangsoo Ho, Erhard Krempl

Mechanics of Materials Laboratory, Rensselaer Polytechnic Institute, Troy, NY 12180-3590

J. Eng. Mater. Technol 123(1), 28-35 (Dec 26, 2000) (8 pages) doi:10.1115/1.1286233 History: Received July 08, 1999; Revised December 26, 2000
Copyright © 2001 by ASME
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References

Figures

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Strain rate sensitivity and relaxation behavior of modified 9Cr-1Mo steel as a function of temperature, from Yaguchi and Takahashi 10
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Positive rate sensitivity, β=0.2. The stress together with the equilibrium and the kinematic stresses are plotted. The dashed and solid curves are for strain rates of 10−6 1/s and 10−3 1/s, respectively.
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Zero rate sensitivity, β=−1. The stress together with the equilibrium and the kinematic stresses are plotted. The dashed and solid curves are for strain rates of 10−6 1/s and 10−3 1/s, respectively.
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Negative rate sensitivity, β=−1.2. The stress together with the equilibrium and the kinematic stresses are plotted. The dashed and solid curves are for strain rates of 10−6 1/s and 10−3 1/s, respectively.
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Simulation of stress-strain curves showing negative strain rate sensitivity at 200°C, data from Fig. 1
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Simulation of relaxation behavior at 200°C, data are from Fig. 1
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Simulation of stress-strain curves showing zero rate sensitivity at 400°C; compare with Fig. 5 of Yaguchi and Takahashi 10
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Simulation of relaxation behavior at 400°C; compare with Fig. 6 of Yaguchi and Takahashi 10
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Simulation of stress-strain curves with positive rate sensitivity at 550°C; compare with Fig. 3 of Yaguchi and Takahashi 10
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Simulation of relaxation behavior at 550°C; compare with Fig. 4 of Yaguchi and Takahashi 10
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Simulation of creep behavior at 550°C; compare with Fig. 13 of Yaguchi and Takahashi 19; Yaguchi and Takahashi 10
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Prediction of strain rate change behavior at 550°C; compare with Fig. 12 of Yaguchi and Takahashi 10
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Prediction of strain rate change behavior at 400°C; compare with Fig. 13 of Yaguchi and Takahashi 10

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