Microstructural evolution and mechanical properties of Mg-9.8Gd-2.7Y-0.4Zr alloy produced by repetitive upsetting

H. Zhou; H. Y. Ning; X. L. Ma; D. D. Yin; L. R. Xiao; X. C. Sha; Y. D. Yu; Q. D. Wang; Y. S. Li

doi:10.1016/j.jmst.2018.01.009

Author(s)

H. Zhou
H. Y. Ning
D. D. Yin
L. R. Xiao
X. C. Sha
Y. D. Yu
Q. D. Wang
Y. S. Li

Detail(s)

Original language	English
Pages (from-to)	1067-1075
Journal / Publication	Journal of Materials Science and Technology
Volume	34
Issue number	7
Publication status	Published - 1 Jul 2018
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1016/j.jmst.2018.01.009 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85041618092&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(a92bef5a-d062-4f48-ac58-000de257bd93).html

Abstract

A newly developed severe plastic deformation (SPD) technique, i.e. repetitive upsetting (RU), is employed to improve the strength and ductility of a Mg-Gd-Y-Zr alloy. During the RU processing, dynamic recrystallization occurs in the Mg alloy, which leads to a significant grain refinement from 11.2 μm to 2.8 μm. The yield strength (YS), ultimate tensile strength (UTS) and elongation increase simultaneously with increasing RU passes. The microstructural evolution is affected by processing temperatures. Dynamic recrystallization prevails at low temperatures, while dynamic recovery is the main effect factor at high temperatures. Texture characteristics gradually become random during multiple passes of RU processing, which reduces the tension-compression asymmetry of the Mg-Gd-Y-Zr alloy.

Research Area(s)

Mechanical properties, Mg-RE alloy, Repetitive upsetting (RU), Severe plastic deformation (SPD)

Bibliographic Note

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Citation Format(s)

[ RIS ] [ BibTeX ]

Microstructural evolution and mechanical properties of Mg-9.8Gd-2.7Y-0.4Zr alloy produced by repetitive upsetting. / Zhou, H.; Ning, H. Y.; Ma, X. L. et al.
In: Journal of Materials Science and Technology, Vol. 34, No. 7, 01.07.2018, p. 1067-1075.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Zhou, H, Ning, HY, Ma, XL, Yin, DD, Xiao, LR, Sha, XC, Yu, YD, Wang, QD & Li, YS 2018, 'Microstructural evolution and mechanical properties of Mg-9.8Gd-2.7Y-0.4Zr alloy produced by repetitive upsetting', Journal of Materials Science and Technology, vol. 34, no. 7, pp. 1067-1075. https://doi.org/10.1016/j.jmst.2018.01.009

Zhou, H., Ning, H. Y., Ma, X. L., Yin, D. D., Xiao, L. R., Sha, X. C., Yu, Y. D., Wang, Q. D., & Li, Y. S. (2018). Microstructural evolution and mechanical properties of Mg-9.8Gd-2.7Y-0.4Zr alloy produced by repetitive upsetting. Journal of Materials Science and Technology, 34(7), 1067-1075. https://doi.org/10.1016/j.jmst.2018.01.009

Zhou H, Ning HY, Ma XL, Yin DD, Xiao LR, Sha XC et al. Microstructural evolution and mechanical properties of Mg-9.8Gd-2.7Y-0.4Zr alloy produced by repetitive upsetting. Journal of Materials Science and Technology. 2018 Jul 1;34(7):1067-1075. doi: 10.1016/j.jmst.2018.01.009

Zhou, H. ; Ning, H. Y. ; Ma, X. L. et al. / Microstructural evolution and mechanical properties of Mg-9.8Gd-2.7Y-0.4Zr alloy produced by repetitive upsetting. In: Journal of Materials Science and Technology. 2018 ; Vol. 34, No. 7. pp. 1067-1075.