Low-cost and high-strength Mg−Al−Ca−Zn−Mn wrought alloy with balanced ductility

Kun Yang; Hucheng Pan; Sen Du; Man Li; Jingren Li; Hongbo Xie; Qiuyan Huang; Huajun Mo; Gaowu Qin

doi:10.1007/s12613-021-2395-y

Volume 29 Issue 7

Jul. 2022

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2022 > 29(7): 1396-1405

Kun Yang, Hucheng Pan, Sen Du, Man Li, Jingren Li, Hongbo Xie, Qiuyan Huang, Huajun Mo, and Gaowu Qin, Low-cost and high-strength Mg−Al−Ca−Zn−Mn wrought alloy with balanced ductility, Int. J. Miner. Metall. Mater., 29(2022), No. 7, pp. 1396-1405. https://doi.org/10.1007/s12613-021-2395-y

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Kun Yang, Hucheng Pan, Sen Du, Man Li, Jingren Li, Hongbo Xie, Qiuyan Huang, Huajun Mo, and Gaowu Qin, Low-cost and high-strength Mg−Al−Ca−Zn−Mn wrought alloy with balanced ductility, Int. J. Miner. Metall. Mater., 29(2022), No. 7, pp. 1396-1405. https://doi.org/10.1007/s12613-021-2395-y

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Research Article

Low-cost and high-strength Mg−Al−Ca−Zn−Mn wrought alloy with balanced ductility

+ Author Affiliations

Corresponding authors:
Hucheng Pan E-mail: panhc@atm.neu.edu.cn

Huajun Mo E-mail: mohjnpic@126.com
Received: 11 September 2021; Revised: 27 November 2021; Accepted: 8 December 2021; Available online: 9 December 2021

Abstract

Abstract

A novel low-cost Mg–Al–Ca–Zn–Mn-based alloy was developed to simultaneously improve its strength and ductility. The high yield strength of 411 MPa and the high elongation to failure of ~8.9% have been achieved in the as-extruded Mg–1.3Al–1.2Ca–0.5Zn–0.6Mn (wt%) sample. Microstructure characterizations showed that the high strength is mainly associated with the ultra-fined dynamically recrystallized (DRXed) grains. Moreover, high-density dislocations in the un-DRXed region and nano-precipitates are distributed among the α-Mg matrix. The high ductility property can be ascribed to the high volume fraction of DRXed grains with a much randomized texture, as well as the formations of high-density subgrains in the un-DRXed grain regions.
- Mg wrought alloy;
- mechanical property;
- dynamic recrystallization;
- texture;
- nano-precipitation

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