Applied Physics A

, 122:854 | Cite as

The nonlinear unloading behavior of a typical Ni-based superalloy during hot deformation: a unified elasto-viscoplastic constitutive model

  • Ming-Song Chen
  • Y. C. LinEmail author
  • Kuo-Kuo Li
  • Jian Chen


In authors’ previous work (Chen et al. in Appl Phys A. doi: 10.1007/s00339-016-0371-6, 2016), the nonlinear unloading behavior of a typical Ni-based superalloy was investigated by hot compressive experiments with intermediate unloading–reloading cycles. The characters of unloading curves were discussed in detail, and a new elasto-viscoplastic constitutive model was proposed to describe the nonlinear unloading behavior of the studied Ni-based superalloy. Still, the functional relationships between the deformation temperature, strain rate, pre-strain and the parameters of the proposed constitutive model need to be established. In this study, the effects of deformation temperature, strain rate and pre-strain on the parameters of the new constitutive model proposed in authors’ previous work (Chen et al. 2016) are analyzed, and a unified elasto-viscoplastic constitutive model is proposed to predict the unloading behavior at arbitrary deformation temperature, strain rate and pre-strain.


Constitutive Model Deformation Temperature Strain Rate Range Material Coefficient Linear Interpolation Method 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This work was supported by National Natural Science Foundation of China (No. 51305466, 51375502), National Key Basic Research Program (Grant No. 2013CB035801), State Key Laboratory of High Performance Complex Manufacturing (No. zzyjkt2014-01), the Project of Innovation-driven Plan in Central South University (No. 2016CX008), the Natural Science Foundation for Distinguished Young Scholars of Hunan Province (Grant No. 2016JJ1017), and Program of Chang Jiang Scholars of Ministry of Education (No. Q2015140), and Key Laboratory of Efficient & Clean Energy Utilization, College of Hunan Province (No. 2015NGQ001), China.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Ming-Song Chen
    • 1
    • 2
    • 3
  • Y. C. Lin
    • 1
    • 2
    • 3
    Email author
  • Kuo-Kuo Li
    • 1
    • 2
  • Jian Chen
    • 4
  1. 1.School of Mechanical and Electrical EngineeringCentral South UniversityChangshaChina
  2. 2.State Key Laboratory of High Performance Complex ManufacturingChangshaChina
  3. 3.Light Alloy Research InstituteCentral South UniversityChangshaChina
  4. 4.School of Energy and Power Engineering, Key Laboratory of Efficient and Clean Energy UtilizationChangsha University of Science and TechnologyChangshaChina

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