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Fracture Behavior and Processing Deformation of C71500 Cupronickel Alloy during Hot Tensile Deformation

  • Metallic materials
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Abstract

The hot tensile deformation properties and microstructure evolution of high purity C71500 cupronickel alloy at 1 023–1 273 K and 0.000 1–0.1 s−1 strain rates were studied by uniaxial hot tensile deformation method. Based on the experimental data, the flow behavior, microstructure and fracture characteristics of the alloy were analyzed after considering the influence of different deformation parameters. The relationship between microstructure and high temperature (T⩾1 023 K) plasticity is discussed, and the fracture mechanism is revealed. The relationship between strain rate sensitivity coefficient and stress index and plastic deformation is discussed. The constitutive equation of the alloy is established by Johnson-Cook model. Based on the dynamic material model, the energy dissipation model is established, and Prasad’s instability criterion based on Ziegler’s expected rheological theory is used to predict the unstable region in the processing map. Processing map in hot tensile is analyzed to provide theoretical basis for different processing technology.

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Authors and Affiliations

  1. Institute of Engineering Technology, University of Science and Technology Beijing, Beijing, 100083, China

    Xin Gao  (高鑫)

  2. General Research Institute of Nonferrous Metals, Beijing, 100088, China

    Xin Gao  (高鑫)

  3. Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing, 100083, China

    Huibin Wu  (武会宾)

  4. State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi’an Jiaotong University, Xi’an, 710049, China

    Ming Liu

  5. The State Key Lab of Rolling and Automation, Northeastern University, Shenyang, 110819, China

    Yuanxiang Zhang

  6. Wuxi Longda Metal Material Co., Ltd, Wuxi, 214105, China

    Xiangdong Zhou & Yuguo Zhong

Authors
  1. Xin Gao  (高鑫)
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  2. Huibin Wu  (武会宾)
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  3. Ming Liu
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  4. Yuanxiang Zhang
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  5. Xiangdong Zhou
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  6. Yuguo Zhong
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Corresponding author

Correspondence to Huibin Wu  (武会宾).

Additional information

Funded by Ministry of Industry and Information Technology of the People’s Republic of China (No. TC170A2KN-8) and the National Natural Science Foundation of China (No. 51801149)

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Gao, X., Wu, H., Liu, M. et al. Fracture Behavior and Processing Deformation of C71500 Cupronickel Alloy during Hot Tensile Deformation. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 36, 407–415 (2021). https://doi.org/10.1007/s11595-021-2424-8

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  • DOI: https://doi.org/10.1007/s11595-021-2424-8

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