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

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

3 Scopus Citations
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Author(s)

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

Detail(s)

Original languageEnglish
Article number139324
Journal / PublicationMaterials Science and Engineering A
Volume785
Online published8 Apr 2020
Publication statusPublished - 21 May 2020
Externally publishedYes

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)

Improving mechanical properties of heterogeneous Mg-Gd alloy laminate via accumulated extrusion bonding. / Liu, Shuaishuai; Zhang, Junlei; Chen, Xiang; Huang, Guangsheng; Xia, Dabiao; Tang, Aitao; Zhu, Yuntian; Jiang, Bin; Pan, Fusheng.

In: Materials Science and Engineering A, Vol. 785, 139324, 21.05.2020.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal