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- W2737826744 abstract "Abstract The hot deformation behavior of a heavy micro-alloyed high-strength low-alloy (HSLA) steel plate was studied by performing compression tests at elevated temperatures. The hot compression tests were carried out at temperatures from 923 K to 1,223 K with strain rates of 0.002 s −1 and 1.0 s −1 . A long plateau region appeared for the 0.002 s −1 strain rate, and this was found to be an effect of the balancing between softening and hardening during deformation. For the 1.0 s −1 strain rate, the flow stress gradually increased after the yield point. The temperature and the strain rate-dependent parameters, such as the strain hardening coefficient ( n ), strength constant ( K ), and activation energy ( Q ), obtained from the flow stress curves were applied to the power law of plastic deformation. The constitutive model for flow stress can be expressed as σ = (39.8 ln ( Z ) – 716.6) · ε (−0.00955ln( Z ) + 0.4930) for the 1.0 s −1 strain rate and σ = (19.9ln ( Z ) – 592.3) · ε (−0.00212ln( Z ) + 0.1540) for the 0.002 s −1 strain rate." @default.
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- W2737826744 date "2017-06-01" @default.
- W2737826744 modified "2023-09-23" @default.
- W2737826744 title "Compressive Deformation Behavior of Thick Micro-Alloyed HSLA Steel Plates at Elevated Temperatures" @default.
- W2737826744 doi "https://doi.org/10.1515/amm-2017-0175" @default.
- W2737826744 hasPublicationYear "2017" @default.
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