Crack propagation behaviour in magnesium binary alloys

Hidetoshi Somekawa, Alok Singh, Tadanobu Inoue, Kaneaki Tsuzaki

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The effect of alloying elements on crack propagation behaviour was investigated using extruded Mg-Ca and Mg-Zn binary alloys, with and without {} type deformation twins (DT). These alloys had similar microstructures grain boundary (GB) structure, basal texture, and grain size of ∼30 m. Most of the cracks in the Mg-Ca alloys were propagated along the high-angle GBs, i.e. exhibiting intergranular fracture, regardless of the existence of DT. On the other hand, crack propagation behaviour in the Mg-Zn alloy was influenced by the presence of twin boundaries (TBs). The fraction of TBs that was associated with the crack propagation showed higher in the twin-induced Mg-Zn alloy. These crack propagation tendencies resulted from modification of the TB energies by additional alloying elements.

Original languageEnglish
Pages (from-to)3317-3330
Number of pages14
JournalPhilosophical Magazine
Volume94
Issue number29
DOIs
Publication statusPublished - Oct 1 2014

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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    Somekawa, H., Singh, A., Inoue, T., & Tsuzaki, K. (2014). Crack propagation behaviour in magnesium binary alloys. Philosophical Magazine, 94(29), 3317-3330. https://doi.org/10.1080/14786435.2014.956840