Ultrastrong Mg Alloy via Nano-spaced Stacking Faults

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • W. W. Jian
  • G. M. Cheng
  • W. Z. Xu
  • H. Yuan
  • M. H. Tsai
  • Q. D. Wang
  • C. C. Koch
  • S. N. Mathaudhu

Detail(s)

Original languageEnglish
Pages (from-to)61-66
Journal / PublicationMaterials Research Letters
Volume1
Issue number2
Online published12 Mar 2013
Publication statusPublished - 2013
Externally publishedYes

Abstract

Mg alloys are among the lightest alloys but they are usually weak. Here we report a new mechanism to make them ultrastrong while maintaining good ductility. Stacking faults with nanoscale spacing were introduced into a Mg-8.5Gd-2.3Y-1.8Ag-0.4Zr (wt%) alloy by conventional hot rolling, which produced a yield strength of ∼575 MPa, an ultimate strength of ∼600 MPa, and a uniform elongation of ∼5.2 %. Low stacking fault (SF) energy enabled the introduction of a high density of SFs, which impeded dislocation slip and promoted dislocation accumulation. These findings provide guidance for developing Mg alloys with superior mechanical properties. © 2013 W. W. Jian, G. M. Cheng, W. Z. Xu, H. Yuan, M. H. Tsai, Q. D. Wang, C. C. Koch, Y. T. Zhu and S. N. Mathaudhu.

Research Area(s)

  • Dislocations, Ductility, Mg, Stacking faults, Strength

Citation Format(s)

Ultrastrong Mg Alloy via Nano-spaced Stacking Faults. / Jian, W. W.; Cheng, G. M.; Xu, W. Z. et al.
In: Materials Research Letters, Vol. 1, No. 2, 2013, p. 61-66.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review