Improving mechanical properties of heterogeneous Mg-Gd alloy laminate via accumulated extrusion bonding

Shuaishuai Liu; Junlei Zhang; Xiang Chen; Guangsheng Huang; Dabiao Xia; Aitao Tang; Yuntian Zhu; Bin Jiang; Fusheng Pan

doi:10.1016/j.msea.2020.139324

Author(s)

Shuaishuai Liu
Junlei Zhang
Xiang Chen
Guangsheng Huang
Dabiao Xia
Aitao Tang
Bin Jiang
Fusheng Pan

Detail(s)

Original language	English
Article number	139324
Journal / Publication	Materials Science and Engineering A
Volume	785
Online published	8 Apr 2020
Publication status	Published - 21 May 2020
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1016/j.msea.2020.139324 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85083468681&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(9fae8a02-7dfc-4863-ad0b-b596977e6d3c).html

Abstract

In this study, accumulative extrusion bonding (AEB) was used to process Mg–1Gd/Mg–13Gd laminated composites, in which the Mg–13Gd layers had much finer grains than the Mg–1Gd layers. This grain size difference was maintained after 2-pass, but diminished after the 3-pass. The 2-pass composite samples exhibited an excellent combination of ultimate tensile strength (291 MPa), elongation (20.6%) and yield strength (144 MPa), which are much superior than the individual component materials. Moreover, the 2-pass samples also exhibited maximum extra strength and ductility that is higher than what is predicted by the rule-of-mixture. The observed high strength and ductility are mainly attributed to back-stress strengthening and work hardening, respectively. The 2-pass samples exhibited the highest back stress, indicating an optimum laminate thickness for producing the highest back stress hardening. This work provide a new understanding on the design of heterogeneous laminated Mg alloys for improving mechanical properties.

Research Area(s)

Accumulative extrusion bonding (AEB), Back-stress hardening, Heterostructures, Mechanical properties, Mg alloys laminates

Citation Format(s)

[ RIS ] [ BibTeX ]

Improving mechanical properties of heterogeneous Mg-Gd alloy laminate via accumulated extrusion bonding. / Liu, Shuaishuai; Zhang, Junlei; Chen, Xiang et al.
In: Materials Science and Engineering A, Vol. 785, 139324, 21.05.2020.

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

Liu, S, Zhang, J, Chen, X, Huang, G, Xia, D, Tang, A, Zhu, Y, Jiang, B & Pan, F 2020, 'Improving mechanical properties of heterogeneous Mg-Gd alloy laminate via accumulated extrusion bonding', Materials Science and Engineering A, vol. 785, 139324. https://doi.org/10.1016/j.msea.2020.139324

Liu, S., Zhang, J., Chen, X., Huang, G., Xia, D., Tang, A., Zhu, Y., Jiang, B., & Pan, F. (2020). Improving mechanical properties of heterogeneous Mg-Gd alloy laminate via accumulated extrusion bonding. Materials Science and Engineering A, 785, Article 139324. https://doi.org/10.1016/j.msea.2020.139324

Liu S, Zhang J, Chen X, Huang G, Xia D, Tang A et al. Improving mechanical properties of heterogeneous Mg-Gd alloy laminate via accumulated extrusion bonding. Materials Science and Engineering A. 2020 May 21;785:139324. Epub 2020 Apr 8. doi: 10.1016/j.msea.2020.139324

Liu, Shuaishuai ; Zhang, Junlei ; Chen, Xiang et al. / Improving mechanical properties of heterogeneous Mg-Gd alloy laminate via accumulated extrusion bonding. In: Materials Science and Engineering A. 2020 ; Vol. 785.