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CHEN Hui-qin, LIU Jian-sheng, GUO Hui-guang. Hot Deformation Behavior of the New Hot-damage-resistant Wheel Steel 20CrSiMnMo[J]. Materials and Mechanical Engineering, 2006, 30(12): 72-75.
Citation: CHEN Hui-qin, LIU Jian-sheng, GUO Hui-guang. Hot Deformation Behavior of the New Hot-damage-resistant Wheel Steel 20CrSiMnMo[J]. Materials and Mechanical Engineering, 2006, 30(12): 72-75.

Hot Deformation Behavior of the New Hot-damage-resistant Wheel Steel 20CrSiMnMo

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  • Received Date: June 28, 2006
  • Hot deformation behavior of the new hot-damage-resistant wheel steel 20CrSiMnMo was investigated by thermo-mechanical modeling tests in 850-1 250 ℃ and strain rate range 0.1-1 s-1.The results indicate that the flow curves at higher temperature and lower strain rate are characterized by dynamic recrystallization,and strain-hardening curves are obtained at lower temperature and higher strain rate.Kinetic analysis is carried out to determine the stress exponent n=5.56 and the activation energy Q=352.272 5 kJ/mol.Microstructure observation and processing map indicate that finer dynamic recrystallization grains and transformed structure will be obtained deforming in temperature and strain rate ranges of 1 000-1 100 ℃,0.1-05 s-1 or 1 250℃,1-0.25 s -1.
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