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| Constitutive Modeling for Elevated Temperature Flow Behavior of 30Cr2Ni4MoV Ultra-super-critical Rotor Steel |
| Fei CHEN1,2,Fa-cai REN1,Zhen-shan CUI1,Xin-min LAI2 |
1. Institute of Forming Technology and Equipment, Shanghai Jiao Tong University, Shanghai 200030, China
2. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China |
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Abstract In order to perform numerical simulation of forging and determine the hot deformation processing parameters for 30Cr2Ni4MoV steel, the compressive deformation behaviors of 30Cr2Ni4MoV steel were investigated at the temperatures from 970 to 1270 �� and strain rates from 0. 001 to 0. 1 s-1 on a Gleeble-3500 thermo-mechanical simulator. The flow stress constitutive equations of the work hardening-dynamical recovery period and dynamical recrystallization period were established for 30Cr2Ni4MoV steel. The stress-strain curves of 30Cr2Ni4MoV steel predicted by the proposed model well agreed with experimental results, which confirmed that the proposed equations can be used to determine the hot deformation processing parameters for 30Cr2Ni4MoV steel.
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Received: 06 November 2012
Published: 14 May 2014
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Corresponding Authors:
Fei CHEN
E-mail: feechn@gmail.com
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2014, Vol. 21 
