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Microstructure evolution and mechanical properties of the ZM61 alloy sheets under different pre-rolling and high strain rate rolling temperatures

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Abstract

The microstructure evolution, dynamic recrystallization (DRX) and precipitation of the ZM61 alloy sheets prepared with different rolling conditions were studied. The DRX grain sizes (dDRX) at four high strain rate rolling (HSRR) temperatures (275–350 °C) are 1.9, 2.3, 2.6 and 3.1 μm, respectively, while the DRX volume fractions (fVDRX) are 69, 73, 76 and 82%, respectively. 300 °C is selected as the optimal HSRR temperature. The dDRX and fVDRX of the alloys prepared by pre-rolling (PR) at 300 °C + HSRR are 1.0 μm and 91%, respectively. The PR treatment does not change the types of the precipitates but promotes the precipitation. The tensile strength (UTS) of 369 MPa and yield strength (YS) of 261 MPa can be achieved by HSRR at 300 °C, while a further increase in both UTS and YS can be obtained by PR treatment.

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Acknowledgments

The authors are grateful to the support of the National Natural Science Foundation of China (51471066, 51571089) and Natural Science Foundation of Hunan Province, China (2019JJ40044).

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Authors and Affiliations

  1. School of Materials Science and Engineering, Hunan University, Changsha, 410082, PR China

    Hongge Yan, Qin Wu, Jihua Chen, Weijun Xia, Bin Su & Jiang Wu

  2. Hunan Provincial Key Laboratory of Spray Deposition Technology & Application, Hunan University, Changsha, 410082, PR China

    Hongge Yan, Qin Wu, Jihua Chen, Weijun Xia, Bin Su & Jiang Wu

  3. State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, PR China

    Min Song

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  1. Hongge Yan
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  2. Qin Wu
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  5. Min Song
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  6. Bin Su
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  7. Jiang Wu
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Correspondence to Qin Wu or Jihua Chen.

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The raw/processed data required to reproduce these findings cannot be shared at this time as the data also form part of an ongoing study.

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Yan, H., Wu, Q., Chen, J. et al. Microstructure evolution and mechanical properties of the ZM61 alloy sheets under different pre-rolling and high strain rate rolling temperatures. Journal of Materials Research 35, 1817–1824 (2020). https://doi.org/10.1557/jmr.2020.158

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  • DOI: https://doi.org/10.1557/jmr.2020.158

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