Design of Ductile Rare-Earth-Free Magnesium Alloys

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review

View graph of relations

Author(s)

Detail(s)

Original languageEnglish
Title of host publicationMagnesium Technology 2020
EditorsJ. Brian Jordon, Victoria Miller, Vineet V. Joshi
PublisherSpringer
Pages19-24
ISBN (Electronic)9783030366476
ISBN (Print)9783030366469
Publication statusPublished - Feb 2020

Publication series

NameMinerals, Metals and Materials Series
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696

Conference

TitleMagnesium Technology 2020 - 149th TMS Annual Meeting and Exhibition
PlaceUnited States
CitySan Diego
Period23 - 27 February 2020

Abstract

Pure Mg has low ductility due to a transition of ⟨c + a⟩ pyramidal dislocations to a sessile basal-oriented structure. Dilute alloying generally improves ductility. Enhancement of pyramidal cross-slip from the lower-energy pyramidal II plane to the higher-energy pyramidal I plane has been proposed as the mechanism. Here, the theory is applied to ternary and quaternary alloys of Zn, Al, Li, Ca, Mn, Sn, K, Zr, and Sr at dilute concentrations, and a wide range of compositions are predicted to have good ductility. Interestingly, while Zn alone is insufficient for achieving ductility, its inclusion in multicomponent alloys at 0.5 at.% enables ductility at the lowest concentrations of other alloying elements. Further implications of the theory are discussed.

Research Area(s)

  • Ductility, Magnesium alloys, Theory

Citation Format(s)

Design of Ductile Rare-Earth-Free Magnesium Alloys. / Curtin, W. A.; Ahmad, Rasool; Yin, Binglun; Wu, Zhaoxuan.

Magnesium Technology 2020. ed. / J. Brian Jordon; Victoria Miller; Vineet V. Joshi. Springer, 2020. p. 19-24 (Minerals, Metals and Materials Series).

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review