TY - JOUR
T1 - Glass-forming ability and thermoplastic formability of a Pd 40Ni40Si4P16 glassy alloy
AU - Chen, N.
AU - Yang, H. A.
AU - Caron, A.
AU - Chen, P. C.
AU - Lin, Y. C.
AU - Louzguine-Luzgin, D. V.
AU - Yao, K. F.
AU - Esashi, M.
AU - Inoue, A.
N1 - Funding Information:
Acknowledgements We thank Prof. Perepezko at University of Wisconsin-Madison for valuable suggestions and review. We thank Ms. Martin for proofreading. We also appreciate the technical support from Dr. H. Kato. This study is sponsored by ‘‘World Premier International Research Center (WPI) Initiative for Atoms, Molecules, and Materials’’ and partially supported by the Research and Development Project on Advanced Metallic Glasses, Inorganic Materials and Joining Technology and Grant-in-Aid ‘‘Priority Area on Science and Technology of Microwave-Induced, Thermally Non-Equilibrium Reaction Field’’ N: 18070001 from Ministry of Education, Culture, Sports, Science and Technology, Japan.
PY - 2011/4
Y1 - 2011/4
N2 - The glass-forming ability of a Pd40Ni40Si 4P16 alloy has been investigated. This alloy exhibits a wide supercooled liquid region of 107 K, a high reduced glass transition temperature of 0.596 and a small fragility parameter of 28, indicating that this alloy is a good glass former. Using flux treatment, the Pd40Ni 40Si4P16 alloys can be easily produced as centimeter-scale metallic glasses. The glass transition and crystallization kinetics of this alloy were investigated by means of both differential scanning calorimetry (DSC) and differential isothermal calorimetry (DIC). Thermoplastic forming of the Pd40Ni40Si4P16 glassy alloy is easily performed due to the high thermal stability and low viscosity of the supercooled liquid. By pressing a "flat" silicon wafer onto a sample within the thermoplastic forming region, the surface of the Pd 40Ni40Si4P16 metallic glasses could be significantly smoothened. The final surface showed a reduced root mean square roughness R q as low as ~2 nm. This indicates a simple approach to prepare "flat" surfaces for metallic glasses.
AB - The glass-forming ability of a Pd40Ni40Si 4P16 alloy has been investigated. This alloy exhibits a wide supercooled liquid region of 107 K, a high reduced glass transition temperature of 0.596 and a small fragility parameter of 28, indicating that this alloy is a good glass former. Using flux treatment, the Pd40Ni 40Si4P16 alloys can be easily produced as centimeter-scale metallic glasses. The glass transition and crystallization kinetics of this alloy were investigated by means of both differential scanning calorimetry (DSC) and differential isothermal calorimetry (DIC). Thermoplastic forming of the Pd40Ni40Si4P16 glassy alloy is easily performed due to the high thermal stability and low viscosity of the supercooled liquid. By pressing a "flat" silicon wafer onto a sample within the thermoplastic forming region, the surface of the Pd 40Ni40Si4P16 metallic glasses could be significantly smoothened. The final surface showed a reduced root mean square roughness R q as low as ~2 nm. This indicates a simple approach to prepare "flat" surfaces for metallic glasses.
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U2 - 10.1007/s10853-010-5043-x
DO - 10.1007/s10853-010-5043-x
M3 - Article
AN - SCOPUS:79751530370
SN - 0022-2461
VL - 46
SP - 2091
EP - 2096
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 7
ER -