TY - JOUR
T1 - Enhanced glass forming ability and mechanical properties of new Cu-based bulk metallic glasses
AU - Kim, Y. C.
AU - Lee, J. C.
AU - Cha, P. R.
AU - Ahn, J. P.
AU - Fleury, E.
N1 - Funding Information:
This research was supported by a grant (code #: 06K1501-00410) from the Center for Nanostructured Materials Technology under the 21st Century Frontier R&D Programs of the Korean Ministry of Science and Technology and Korea Institute of Science and Technology.
PY - 2006/11/15
Y1 - 2006/11/15
N2 - The thermal stability, glass forming ability and mechanical properties of Cu-Zr-Al-M (M = Ag, Be) bulk metallic glass alloys have been investigated. The glass forming ability in the Cu-Zr-Al-M (M = Ag, Be) alloys increased proportionally to the Ag or Be content and show good correlations with thermal parameters such as ΔTx (=Tx - Tg), Trg (=Tg/Tl) and γ (=Tx/(Tg + Tl)), where Tg, Tx, and Tl are glass transition, crystallization, and liquidus temperatures, respectively. Particularly, for the Cu43Zr43Al7Be7 alloy, the supercooled liquid region reached 103 K, and fully amorphous rods up to 12 mm in diameter were successfully fabricated by copper mold casting. Ag containing alloy shows large ductility due to phase separation and Be containing alloy shows high compressive strength due to high packing density.
AB - The thermal stability, glass forming ability and mechanical properties of Cu-Zr-Al-M (M = Ag, Be) bulk metallic glass alloys have been investigated. The glass forming ability in the Cu-Zr-Al-M (M = Ag, Be) alloys increased proportionally to the Ag or Be content and show good correlations with thermal parameters such as ΔTx (=Tx - Tg), Trg (=Tg/Tl) and γ (=Tx/(Tg + Tl)), where Tg, Tx, and Tl are glass transition, crystallization, and liquidus temperatures, respectively. Particularly, for the Cu43Zr43Al7Be7 alloy, the supercooled liquid region reached 103 K, and fully amorphous rods up to 12 mm in diameter were successfully fabricated by copper mold casting. Ag containing alloy shows large ductility due to phase separation and Be containing alloy shows high compressive strength due to high packing density.
KW - Cu-based bulk metallic glass
KW - Glass forming ability
KW - Mechanical properties
KW - Thermal stability
UR - http://www.scopus.com/inward/record.url?scp=33749514150&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2006.07.141
DO - 10.1016/j.msea.2006.07.141
M3 - Article
AN - SCOPUS:33749514150
VL - 437
SP - 248
EP - 253
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
SN - 0921-5093
IS - 2
ER -