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

Qingchun Zhu; Yangxin Li; Fuyong Cao; Dongchao Qiu; Yao Yang; Jingya Wang; Huan Zhang; Tao Ying; Wenjiang Ding; Xiaoqin Zeng

doi:10.1038/s41467-022-33480-w

journal article Open Access Oct 03, 2022

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

Qingchun Zhu Yangxin Li

Fuyong Cao Dongchao Qiu Yao Yang

Jingya Wang

Huan Zhang

Tao Ying

Wenjiang Ding Xiaoqin Zeng

Nature Communications Vol. 13 No. 1 · Springer Science and Business Media LLC

View at Publisher Save 10.1038/s41467-022-33480-w

Abstract

AbstractMagnesium 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.

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Citations

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References

Details

Published: Oct 03, 2022
Vol/Issue: 13(1)
License: View

Authors

State Key Laboratory of Superhard Materials, College of Physics, Jilin University 1 , Changchun 130012, People's Republic of China; School of Science, University of Science and Technology Liaoning 2 , Anshan 114051, People's Republic of China

Funding

National Natural Science Foundation of China Award: 51701121

Cite This Article

Qingchun Zhu, Yangxin Li, Fuyong Cao, et al. (2022). Towards development of a high-strength stainless Mg alloy with Al-assisted growth of passive film. Nature Communications, 13(1). https://doi.org/10.1038/s41467-022-33480-w

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

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