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Plasticity of bulk metallic glasses improved by controlling the solidification condition

  • Z. W. Zhu
  • , S. J. Zheng
  • , H. F. Zhang*
  • , B. Z. Ding
  • , Z. Q. Hu
  • , P. K. Liaw
  • , Y. D. Wang
  • , Y. Ren
  • *Corresponding author for this work

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

Abstract

Different bulk metallic glasses (BMGs) were prepared in ductile Cu47.5Zr47.5Al5, Zr62Cu15.4Ni12.6Al10, and brittle Zr55Ni5Al10Cu30 alloys by controlling solidification conditions. The achieved microstructures were characterized by x-ray diffraction, differential scanning calorimetry, transmission electron microscopy, and synchrotron-based high-energy x-ray diffraction. Monolithic BMGs obtained by high-temperature injection casting are brittle, while BMGs bearing some nanocrystals with the size of 3 to 7 nm and 2 to 4 nm, obtained by low-temperature injection casting and in situ suction casting, respectively, exhibit good plasticity. It indicates that the microstructures of BMGs tire closely affected by the solidification conditions. Controlling the solidification conditions could improve the plasticity of BMGs. © 2008 Materials Research Society.
Original languageEnglish
Pages (from-to)941-948
JournalJournal of Materials Research
Volume23
Issue number4
DOIs
Publication statusPublished - Apr 2008
Externally publishedYes

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