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Effect of Test Temperature and Strain Rate on Dynamic Mechanical Behavior of Aluminum Alloy 2519A

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Abstract

The dynamic mechanical behavior of aluminum alloy 2519A-T9I6 has been investigated by a split Hopkinson bar at temperature range from 298 to 523 K and at strain rates of from 103 to 5 × 103 s−1 in this study. The results show that both the strain rate and test temperature have a significant effect on the dynamic behavior and microstructure evolution of aluminum alloy 2519A-T9I6. Under similar strain rate, the strengthening effect of strain rate decreases with the increase in the test temperature. Moreover, the dynamic yield strength at above 423 K drops sharply at the strain rate of about 5000 s−1, which is attributed to the flow softening caused by decomposition of θ′ precipitates at high strain rate and high temperature.

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Acknowledgment

This study was supported by the National Key Research and Development Program of China (No. 2016YFB0300901), which is gratefully acknowledged.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Central South University, Changsha, 410083, China

    Ling-ying Ye, Yu Dong, Yong Zhang & Xin-ming Zhang

  2. Guangdong Industry Analysis Testing Center, Guangzhou, 510650, China

    Da-xiang Sun

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  1. Ling-ying Ye
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  2. Yu Dong
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  3. Yong Zhang
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Correspondence to Yong Zhang.

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Ye, Ly., Dong, Y., Zhang, Y. et al. Effect of Test Temperature and Strain Rate on Dynamic Mechanical Behavior of Aluminum Alloy 2519A. J. of Materi Eng and Perform 28, 4964–4971 (2019). https://doi.org/10.1007/s11665-019-04216-7

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  • DOI: https://doi.org/10.1007/s11665-019-04216-7

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