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A novel as-cast precipitation-strengthened Al0.5V0.1FeCrMnNi0.9 high-entropy alloy with high strength and plasticity

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Abstract

A novel Al0.5V0.1FeCrMnNi0.9 high-entropy alloy was designed to achieve enhanced strength and plasticity. The as-cast Al0.5V0.1FeCrMnNi0.9 alloy shows a typical dendritic microstructure consisting of a body-centered cubic-structured matrix phase and a B2-structured nanoprecipitate phase. Nanoprecipitates are homogeneous and dispersed in the matrix. The as-cast Al0.5V0.1FeCrMnNi0.9 alloy exhibits a compressive yield strength of 1.104 GPa, a fracture strength of 2.926 GPa, and a fracture strain of 45.7%. The product of strength and plasticity of this alloy is 133.72 GPa%, which is superior to that of most of the reported high-entropy alloys. The strengthening mechanisms were evaluated in detail, which indicates that the coherent precipitation enhancement contributes to the unusually high strength and plasticity.

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Authors and Affiliations

  1. Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116024, China

    ChunHui Li, MingLiang Wang, HuanZhi Zhang, GuoJia Zhang, TianXin Li, YiPing Lu & TingJu Li

Authors
  1. ChunHui Li
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  2. MingLiang Wang
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  3. HuanZhi Zhang
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  4. GuoJia Zhang
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  5. TianXin Li
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  6. YiPing Lu
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  7. TingJu Li
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Corresponding author

Correspondence to YiPing Lu.

Additional information

This work was supported by the National Key Research and Development Program of China (Grant Nos. 2019YFA0209901 and 2018YFA0702901), the Liao Ning Revitalization Talents Program (Grant No. XLYC1807047), the Fund of Science and Technology on Reactor Fuel and Materials Laboratory (Grant No. 6142A06190304), the Fund of the State Key Laboratory of Solidification Processing in NWPU (Grant No. SKLSP201902), and the Project funded by China Postdoctoral Science Foundation (Grant No. 2020M670747).

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Li, C., Wang, M., Zhang, H. et al. A novel as-cast precipitation-strengthened Al0.5V0.1FeCrMnNi0.9 high-entropy alloy with high strength and plasticity. Sci. China Technol. Sci. 64, 1920–1926 (2021). https://doi.org/10.1007/s11431-021-1866-8

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