Effect of Nb addition on the subsurface deformation behavior in Cu47Ti34Zr11Ni8 bulk metallic glasses through Vickers indentation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Y. F. Sun
  • C. X. Ren
  • X. F. Liu
  • S. J. Zhu
  • S. K. Guan

Detail(s)

Original languageEnglish
Pages (from-to)11-15
Journal / PublicationMaterials Science and Engineering A
Volume520
Issue number1-2
Publication statusPublished - 15 Sep 2009

Abstract

In this paper, 3 mm diameter (Cu47Ti34Zr11Ni8)100-xNbx (x = 0,1,2) glass forming alloys were fabricated by water-cooled copper mould cast. Microstructural characterization reveals that the monolithic Cu47Ti34Zr11Ni8 bulk metallic glass exhibits homogenous amorphous structure. While the alloys with Nb addition exhibit a composite structure. For alloys with x = 1, micro-scaled crystalline particles were found to distribute in the glassy matrix. For alloys with x = 2, the microstructure is dominated by a high density of dendritic phase embedded in the glassy matrix. Bonded interface technique was adopted to study the deformation behavior of the alloys underneath the Vickers indentation. It reveals that the subsurface shear patterns are significantly affected by the precipitated phases. The different deformation mechanism of the alloys resulted from the minor Nb addition was put forward and discussed. © 2009 Elsevier B.V. All rights reserved.

Research Area(s)

  • Bulk metallic glass, Mechanical properties, Microstructure, Shear bands

Citation Format(s)

Effect of Nb addition on the subsurface deformation behavior in Cu47Ti34Zr11Ni8 bulk metallic glasses through Vickers indentation. / Sun, Y. F.; Shek, C. H.; Ren, C. X.; Liu, X. F.; Zhu, S. J.; Guan, S. K.

In: Materials Science and Engineering A, Vol. 520, No. 1-2, 15.09.2009, p. 11-15.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review