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Glass‐Forming Ability and Ductility of Zr‐Based and Al‐Rich Bulk Metallic Glasses
Author(s) -
Wunderlich R. K.,
Vaillant M. L.,
Caron A.,
Fecht H. J.
Publication year - 2008
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.200800183
Subject(s) - materials science , nanoindentation , ductility (earth science) , amorphous metal , brittleness , microstructure , composite material , phase (matter) , indentation hardness , amorphous solid , elastic modulus , metallurgy , composite number , alloy , crystallography , creep , chemistry , organic chemistry
The glass forming ability and mechanical properties in the equivalent Zr‐Al‐CuNiCo three component phase diagram was investigated as a function of Al‐content along the Zr 63‐x Al x Cu 24 Ni 10 Co 3 (at.%) with 7 ≤ x ≤ 20 isoconcentration line. Mechanical properties were investigated by nanoindentation and ultrasonic sound velocity measurements showing an increase in hardness and bulk modulus of the fully amorphous alloys as a function of the Al‐concentration. The crystalline phase in the composite microstructure turned out to be brittle and thus no improvement in ductility was obtained.