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Hot deformation map and its application of GH4706 alloy

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Abstract

The hot deformation behaviors of GH4706 alloy were investigated using compression tests in a deformation temperature range from 900°C to 1200°C with a strain rate range of 0.001–1 s−1. Hot processing maps were developed on the basis of the dynamic material model and compression data. A three-dimensional distribution of power dissipation parameter (η) with strain rate and temperature reveals that η decreases in sensitivity with an increase in strain rate and a decrease in temperature. Microstructure studies show that the grain size of GH4706 alloy increases when η is larger than 0.32, and the microstructure exhibits local deformation when η is smaller than 0.23. The hot processing map at the strain of 0.7 exposes a domain peak at η=0.32 for the temperature between 940°C and 970°C with the strain rate from 0.015 s−1 to 0.003 s−1, and these are the optimum parameters for hot working.

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Authors and Affiliations

  1. Key Lab for Anisotropy and Texture of Materials, Northeastern University, Shenyang, 110819, China

    Shuo Huang, Lei Wang & Xin-tong Lian

  2. Department of High Temperature Materials, Central Iron and Steel Research Institute, Beijing, 100081, China

    Shuo Huang, Xin-tong Lian, Guang-pu Zhao, Fang-fei Li & Xiao-min Zhang

Authors
  1. Shuo Huang
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  2. Lei Wang
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  3. Xin-tong Lian
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  4. Guang-pu Zhao
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  5. Fang-fei Li
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Correspondence to Lei Wang.

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Huang, S., Wang, L., Lian, Xt. et al. Hot deformation map and its application of GH4706 alloy. Int J Miner Metall Mater 21, 462–468 (2014). https://doi.org/10.1007/s12613-014-0930-9

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  • DOI: https://doi.org/10.1007/s12613-014-0930-9

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