Crack propagation behaviour in magnesium binary alloys

Hidetoshi Somekawa, Alok Singh, Tadanobu Inoue, Kaneaki Tsuzaki

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


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
Issue number29
Publication statusPublished - Oct 1 2014

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


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