Compression Behavior of Mg-Cu-Gd Bulk Metallic Glasses with Various Specimen Height to Diameter Ratios

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

12 Scopus Citations
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Author(s)

  • H. M. Chen
  • Y. C. Chang
  • T. H. Hung
  • X. H. Du
  • J. S. C. Jang
  • P. K. Liaw

Detail(s)

Original languageEnglish
Pages (from-to)1802-1805
Journal / PublicationMaterials Transactions
Volume48
Issue number7
Online published20 Jun 2007
Publication statusPublished - 2007
Externally publishedYes

Conference

TitleFifth International Conference on Bulk Metallic Glasses (BMG-V)
Locationthe Awaji Yumebutai International Conference Center
PlaceJapan
CityAwaji Island
Period1 - 5 October 2006

Abstract

The mechanical behavior of the Mg65Cu25Gd10 bulk metallic glasses (BMGs) in term of compression testing is reported in this study. Room-temperature compression tests are conducted on specimens with various height to diameter ratios (h/d) from 2 : 1, 1 : 1, 1 : 2, to 1 : 4. The failure strength, deformation strain, and the fracture surface morphologies are seen to vary systematically in accordance with the specimen h/d ratio. For specimens with h/d of 2 : 1 or 1 : 1, the compression response is similar to those in most reports. In contrast, for specimens with lower h/d ratios, especially at h/d = 1 : 4 (or 0.25), the shear band propagation appears to be constrained, resulting in the enhanced ductility. It suggests that different deformation mechanisms are operative for specimens with different h/d ratios. The possible deformation mechanisms in specimens of different geometries are discussed.

Research Area(s)

  • brittleness and ductility, deformation mechanisms, mechanical properties, metallic glasses, shear bands

Citation Format(s)

Compression Behavior of Mg-Cu-Gd Bulk Metallic Glasses with Various Specimen Height to Diameter Ratios. / Chen, H. M.; Chang, Y. C.; Hung, T. H.; Du, X. H.; Huang, J. C.; Jang, J. S. C.; Liaw, P. K.

In: Materials Transactions, Vol. 48, No. 7, 2007, p. 1802-1805.

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