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Centimeter‐Sized Quaternary Ti‐Based Bulk Metallic Glasses with High Ti Content of 50 at%
Author(s) -
Zhao Shaofan,
Chen Na,
Gong Pan,
Yao Kefu
Publication year - 2016
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201500165
Subject(s) - materials science , amorphous metal , casting , alloy , metallurgy , titanium alloy , characterization (materials science) , titanium , composite material , nanotechnology
Using copper mold suction casting, high Ti content alloys of Ti 50 Zr 16 Be 24 Ni 10 , Ti 50 Zr 20 Be 20 Ni 10 , and Ti 55 Zr 15 Be 20 Ni 10 are fabricated in bulk metallic glasses (BMGs) with the critical diameters (D c ) of 10, 6, and 5 mm, respectively. In particular, the Ti 50 Zr 16 Be 24 Ni 10 BMG is the first centimeter‐scale high Ti content BMG with Ti concentration as high as 50 at%. In addition, these high Ti content BMGs exhibit high specific strength and apparent plastic strain. Especially, the Ti 50 Zr 16 Be 24 Ni 10 BMG exhibits a specific strength of 3.87 × 10 5 N m kg −1 and a plastic strain of 5.7 ± 0.5%. Our results indicate that a combination of lower Zr and higher Be contents promotes glass formation in the Ti–Zr–Be–Ni alloy system. The developed Ti‐based BMGs with high specific strength provide potentials for engineering applications.