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Towards development of a high-strength stainless Mg alloy with Al-assisted growth of passive film

Author

Listed:
  • Qingchun Zhu

    (Shanghai Jiao Tong University)

  • Yangxin Li

    (Shanghai Jiao Tong University)

  • Fuyong Cao

    (Xiamen University)

  • Dong Qiu

    (RMIT University)

  • Yao Yang

    (Shanghai Jiao Tong University)

  • Jingya Wang

    (Shanghai Jiao Tong University)

  • Huan Zhang

    (Shanghai Jiao Tong University)

  • Tao Ying

    (Shanghai Jiao Tong University)

  • Wenjiang Ding

    (Shanghai Jiao Tong University)

  • Xiaoqin Zeng

    (Shanghai Jiao Tong University)

Abstract

Magnesium alloys with high strength and excellent corrosion resistance are always sought-after in light-weighting structural components for automotive and aerospace applications. However, for most magnesium alloys that have a high specific strength, they usually have an inferior corrosion resistance and vice versa. In this work, we successfully develop a Mg-11Y-1Al (wt. %) alloy through conventional casting, solution treatment followed by extrusion. The overall properties of this alloy feature with a corrosion rate lower than 0.2 mm y−1, high yield strength of 350 MPa and moderate tensile elongation of 8%, the combination of which shows competitive advantage over other comparative magnesium alloys in the literature. It is found that a thin and dense protective film of Y2O3/Y(OH)3 can be fast developed with the aid of Al2O3/Al(OH)3 deposition to isolate this alloy from further attack of corrosion medium. Meanwhile, the refined grains, weak texture and activation of non-basal slip systems co-contribute to the high strength and good ductility. Our findings are expected to inspire the design of next-generation high performance magnesium alloys.

Suggested Citation

  • Qingchun Zhu & Yangxin Li & Fuyong Cao & Dong Qiu & Yao Yang & Jingya Wang & Huan Zhang & Tao Ying & Wenjiang Ding & Xiaoqin Zeng, 2022. "Towards development of a high-strength stainless Mg alloy with Al-assisted growth of passive film," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-33480-w
    DOI: 10.1038/s41467-022-33480-w
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    References listed on IDEAS

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    1. Changjian Yan & Yunchang Xin & Xiao-Bo Chen & Daokui Xu & Paul K. Chu & Chaoqiang Liu & Bo Guan & Xiaoxu Huang & Qing Liu, 2021. "Evading strength-corrosion tradeoff in Mg alloys via dense ultrafine twins," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
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    Cited by:

    1. Chengbin Jin & Yiyu Huang & Lanhang Li & Guoying Wei & Hongyan Li & Qiyao Shang & Zhijin Ju & Gongxun Lu & Jiale Zheng & Ouwei Sheng & Xinyong Tao, 2023. "A corrosion inhibiting layer to tackle the irreversible lithium loss in lithium metal batteries," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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