Thermal Deformation Behavior and Processing Maps of As-Homogenized Mg-5.8 Zn-0.5 Zr-1.0 Yb Alloy
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Isothermal compression tests at temperatures of 250–400°C and strain rates of 0.001–1 s−1 were performed in a Gleeble-1500 thermal simulator to investigate the hot deformation behavior of as-homogenized Mg-5.8 Zn-0.5 Zr-1.0 Yb alloy. The Arrhenius-type constitutive equation and hot processing maps were established based on these experiments. Two dynamic recrystallized (DRX) domains were identified as (1) 280–350°C and 0.15–1 s−1; (2) 330–400°C and 0.001–0.09 s−1. The DRX mechanisms of the above-mentioned two domains and the instability patterns of the unstable regions were analyzed by optical microscopy and electron backscatter diffraction. The results provide a fundamental insight into the processing design, microstructural evolution, and property control of the newly developed Mg-Zn-Zr-Yb alloy.
This work was financially supported by the National Natural Science Foundation of China (51605392).
Conflict of interest
The authors declare that there is no conflict of interest.
- 8.H. Yu, Y.M. Kim, H.S. Yu, B.S. You, and G.H. Min, Acta Metall. Sin. 48, 1123 (2012).Google Scholar
- 10.Y.J. Qin, Q.L. Pan, Y.B. He, W.B. Li, X.Y. Liu, and X. Fan, Acta Metall. Sin. 45, 887 (2009).Google Scholar
- 11.L. Li, W. Jiang, P.T. Guo, W.B. Yu, F. Wang, and Z.Y. Pan, Mater. Res. Ibero Am. J. Mater. 20, 1063 (2017).Google Scholar