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

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

doi:10.2320/matertrans.MJ200722

Author(s)

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

Detail(s)

Original language	English
Pages (from-to)	1802-1805
Journal / Publication	Materials Transactions
Volume	48
Issue number	7
Online published	20 Jun 2007
Publication status	Published - 2007
Externally published	Yes

Conference

Title	Fifth International Conference on Bulk Metallic Glasses (BMG-V)
Location	the Awaji Yumebutai International Conference Center
Place	Japan
City	Awaji Island
Period	1 - 5 October 2006

Link(s)

DOI	DOI https://doi.org/10.2320/matertrans.MJ200722 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-34548010495&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(3da095dd-68c6-4fd4-aa1e-0ce81f535fc4).html

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)

[ RIS ] [ BibTeX ]

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

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Chen, HM, Chang, YC, Hung, TH, Du, XH, Huang, JC, Jang, JSC & Liaw, PK 2007, 'Compression Behavior of Mg-Cu-Gd Bulk Metallic Glasses with Various Specimen Height to Diameter Ratios', Materials Transactions, vol. 48, no. 7, pp. 1802-1805. https://doi.org/10.2320/matertrans.MJ200722

Chen, H. M., Chang, Y. C., Hung, T. H., Du, X. H., Huang, J. C., Jang, J. S. C., & Liaw, P. K. (2007). Compression Behavior of Mg-Cu-Gd Bulk Metallic Glasses with Various Specimen Height to Diameter Ratios. Materials Transactions, 48(7), 1802-1805. https://doi.org/10.2320/matertrans.MJ200722

Chen HM, Chang YC, Hung TH, Du XH, Huang JC, Jang JSC et al. Compression Behavior of Mg-Cu-Gd Bulk Metallic Glasses with Various Specimen Height to Diameter Ratios. Materials Transactions. 2007;48(7):1802-1805. Epub 2007 Jun 20. doi: 10.2320/matertrans.MJ200722

Chen, H. M. ; Chang, Y. C. ; Hung, T. H. et al. / Compression Behavior of Mg-Cu-Gd Bulk Metallic Glasses with Various Specimen Height to Diameter Ratios. In: Materials Transactions. 2007 ; Vol. 48, No. 7. pp. 1802-1805.