Ductile Fe-Nb-B bulk metallic glass with ultrahigh strength

J. H. Yao; J. Q. Wang; Y. Li

doi:10.1063/1.2949747

Ductile Fe-Nb-B bulk metallic glass with ultrahigh strength

J. H. Yao
, J. Q. Wang
, Y. Li

CAS - Institute of Metal Research
National University of Singapore

Research output: Contribution to journal › Article › peer-review

125 Scopus citations

Abstract

The authors report a simple Fe-based Fe₇₁ Nb₆ B ₂₃ ternary bulk metallic glass with a record high strength of 4.85 GPa as well as an appreciable compressive plastic strain of 1.6%. This finding is associated with the unique attribute of the alloying element Nb, which favors the formation of a networklike structure and holds high Poisson's ratio. A fracture feature with a combination of vein pattern and nanoscale corrugations under compression is clearly characterized in this glass. The fractographic observations correlate well with the observed improvements in plasticity.

Original language	English
Article number	251906
Journal	Applied Physics Letters
Volume	92
Issue number	25
DOIs	https://doi.org/10.1063/1.2949747
State	Published - 2008
Externally published	Yes

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AB - The authors report a simple Fe-based Fe71 Nb6 B 23 ternary bulk metallic glass with a record high strength of 4.85 GPa as well as an appreciable compressive plastic strain of 1.6%. This finding is associated with the unique attribute of the alloying element Nb, which favors the formation of a networklike structure and holds high Poisson's ratio. A fracture feature with a combination of vein pattern and nanoscale corrugations under compression is clearly characterized in this glass. The fractographic observations correlate well with the observed improvements in plasticity.

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Ductile Fe-Nb-B bulk metallic glass with ultrahigh strength

Abstract

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