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Development of Constitutive Equation and Processing Maps for IN706 Alloy

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Acta Metallurgica Sinica (English Letters) Aims and scope

Abstract

The hot deformation behavior of IN706 has been investigated by means of hot compression tests in the temperature range of 900–1150 °C and strain rate range of 0.001–1 s−1. The constitutive equation was developed on the basis of experimental data. Power dissipation efficiency (η) and instability parameter (ξ) maps were evaluated using the principles of the dynamic material model. Furthermore, the EBSD microstructure analysis was performed for validation, revealing that η was closely associated with the mechanism of dynamic recrystallization (DRX). Microstructure transition map was composed of contour plots of η, ξ, and DRX. The DRX domain zones and instable zones were identified in the processing map and were classified based on η. In a view of microstructure refinement and workability improvement, the optimum processing should be selected in the temperature range of 970–1025 °C and the strain rate range of 0.08–0.01 s−1.

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Acknowledgments

This work was financially supported by the High Technology Research and Development Program of China (No. SS2012AA030801), the National Basic Research Development Program of China (No. 2010CB631203), and the Common Technical Research Aircraft Key Component Forming (No. 2012ZX04010-081).

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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 & Xintong Lian

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

    Shuo Huang, Beijiang Zhang & Guangpu Zhao

Authors
  1. Shuo Huang
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  2. Lei Wang
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  3. Xintong Lian
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  4. Beijiang Zhang
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  5. Guangpu Zhao
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Correspondence to Lei Wang.

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Huang, S., Wang, L., Lian, X. et al. Development of Constitutive Equation and Processing Maps for IN706 Alloy. Acta Metall. Sin. (Engl. Lett.) 27, 198–204 (2014). https://doi.org/10.1007/s40195-014-0037-3

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  • DOI: https://doi.org/10.1007/s40195-014-0037-3

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