Abstract:
The hot deformation behavior of the Cu-Cr-Zr-Ag alloy has been investigated by hot compressive tests in the 650-950 °C temperature and 0.001-10 s−1 strain rate ranges using Gleeble-1500D thermo-mechanical simulator. The microstructure evolution of the alloy during deformation was characterized using optical and transmission electron microscopy. The flow stress decreases with the deformation temperature and increases with the strain rate. The apparent activation energy for hot deformation of the alloy was 343.23 kJ/mol. The constitutive equation of the alloy based on the hyperbolic-sine equation was established to characterize the flow stress as a function of the strain rate and the deformation temperature. The processing maps were established based on the dynamic material model. The optimal processing parameters for hot deformation of the Cu-Cr-Zr-Ag alloy are 900-950 °C and 0.001-0.1 s−1 strain rate. The evolution of DRX microstructure strongly depends on the deformation temperature and the strain rate.
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This work was supported by the National Natural Science Foundation of China (No. 51101052) and by the National Science Foundation (IRES 1358088). The authors would like to thank an anonymous reviewer for useful comments.
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Zhang, Y., Chai, Z., Volinsky, A.A. et al. Hot Deformation Characteristics and Processing Maps of the Cu-Cr-Zr-Ag Alloy. J. of Materi Eng and Perform 25, 1191–1198 (2016). https://doi.org/10.1007/s11665-016-1937-3
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DOI: https://doi.org/10.1007/s11665-016-1937-3