Recrystallization Behavior of Deformed Austenite in High Strength Microalloyed Pipeline Steel

  • Jing-hong YangEmail author
  • Qing-you Liu
  • Dong-bai Sun
  • Xiang-yang Li


Using methods of single-hit hot compression and stress relaxation after deformation on a Gleeble 1500D thermomechanical simulator, the curves of flow stress and stress relaxation, the microstructure and the recrystallization behavior of Nb-V-Ti high strength microalloyed low carbon pipeline steel were studied, and the influence of the thermomechanical treatment parameters on dynamic and static recrystallization of the steel was investigated. It was found that microalloying elements improved the deformation activation energy and produced a retardation of the recrystallization due to the solid solution and precipitation pinning. The deformation conditions such as deformation temperature, strain, and strain rate influenced the recrystallization kinetics and the microstructure respectively. Equations obtained can be used to valuate and predict the dynamic and static recrystallizations.

Key words

dynamic recrystallization static recrystallization microalloyed steel austenite 


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  1. [1]
    Medina S F, Hernanden C A. Modelling of the Dynamic Recrystallization of Austenite in Low Alloy and Microalloyed Steels [J]. Acta Metallurgica, 1995, 44(1): 165.Google Scholar
  2. [2]
    Elwazri A M, Wanjara P, Yue S. Dynamic Recrystallization of Austenite in Microalloyed High Carbon Steels [J]. Materials Science and Engineering, 2003, 339A: 209.CrossRefGoogle Scholar
  3. [3]
    Fernandez A I, Uranga P, Lopez B, et al. Dynamic Recrystallization Behavior Covering a Wide Austenite Grain Size Range in Nb and Nb-Ti Microalloyed Steels [J]. Materials Science and Engineering, 2003, 361A: 367.CrossRefGoogle Scholar
  4. [4]
    Liang X K, Sun X J, Liu Q Y, et al. The Study of Dynamic Recrystallization of Low Carbon Steel in Thin Slab Continuous Rolling Process [J]. Acta Metallurgica Sinica, 2006, 19(4): 265.CrossRefGoogle Scholar
  5. [5]
    Sellars C M, Tegart W J M. Hot Workability [J]. International Metallurgical Reviews, 1972, 17: 1.CrossRefGoogle Scholar
  6. [6]
    Medina S F, Hernandez C A. General Expression of the Zener-Hollomon Parameter as a Function of the Chemical Composition of Low Alloy and Microalloyed Steels [J]. Acta Metallurgica, 1996, 44: 137.Google Scholar
  7. [7]
    Medina S F, Quispe A. Improved Model for Static Recrystallization Kinetics of Hot Deformed Austenite in Low Alloy and Nb/V Microalloyed Steels [J]. 1S1J International, 2001, 41 (7): 774.Google Scholar
  8. [8]
    Sun W P, Hawbolt E B. Comparison Between Static and Meta-dynamic Recrystallization—An Application to the Hot Rolling of Steels [J]. ISIJ International, 1997, 37(10): 1000.CrossRefGoogle Scholar
  9. [9]
    Kowalski B, Sellars C M, Pietrzyk M. Development of a Computer Code for the Interpretation of Results of Hot Plane Strain Compression Tests [J]. ISIJ International, 2000, 40(12): 1230.CrossRefGoogle Scholar
  10. [10]
    Karjalainen L P, Perttula J. Characteristics of Static and Metadynamic Recrystallization and Strain Accumulation in Hot-Deformed Austenite as Revealed by the Stress Relaxation Method [J]. ISIJ International, 1996, 36(6): 729.CrossRefGoogle Scholar
  11. [11]
    Gomez M, Medina S F, Quispe A, et al. Static Recrystallization and Induced Precipitation in a Low Nb Microalloyed Steel [J]. ISIJ International, 2002, 42(4): 423.CrossRefGoogle Scholar
  12. [12]
    Zhang Z H, Liu Y N., Liang X K, et al. The Effect of Nb on Recrystallization Behavior of a Nb Micro-Alloyed Steel [J]. Materials Science and Engineering, 2008, 474A(1–2): 254.Google Scholar
  13. [13]
    Cho S H, Kang K B, Jonas J J. The Dynamic, Static and Metadynamic Recrystallization of a Nb-Microalloyed Steel [J]. ISIJ International, 2001, 41(1): 63.CrossRefGoogle Scholar

Copyright information

© China Iron and Steel Research Institute Group 2009

Authors and Affiliations

  • Jing-hong Yang
    • 1
    • 2
    Email author
  • Qing-you Liu
    • 2
  • Dong-bai Sun
    • 1
  • Xiang-yang Li
    • 2
  1. 1.School of Material Science and EngineeringUniversity of Science and Technology BeijingBeijingChina
  2. 2.State Key Laboratory of Advanced Steel Processes and ProductsChina Iron and Steel Research Institute GroupBeijingChina

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