Pressure-induced amorphization of ZrTiCuNiBe bulk glass-forming alloy

Wang, WH Wang, RJ Dai, DY Zhao, DQ Pan, MX Yao, YS

Wh. Wang et al., Pressure-induced amorphization of ZrTiCuNiBe bulk glass-forming alloy, APPL PHYS L, 79(8), 2001, pp. 1106-1108

19

INGLESE

Article

Apllied Physucs/Condensed Matter/Materiales Science

APPLIED PHYSICS LETTERS

0003-6951 → ACNP

79

8

2001

1106 - 1108

ISI

0003-6951(20010820)79:8<1106:PAOZBG>2.0.ZU;2-K

Zr41Ti14Cu12.5Ni10Be22.5 alloy can be cooled under high pressure (HP) to a bulky glassy state at very low cooling rates. The structure and properties of the bulk metallic glass (BMG) are investigated by differential scanning calorimetry, x-ray diffraction, ultrasonic study, and density measurements. The effects of pressure on the glass formation are discussed from the poin ts of view of nucleation kinetics and thermodynamics. The BMG obtained unde r HP is in a high-density amorphous state that is different in structure an d property from low-density amorphous phase quenched in water. Solidificati on under HP is a promising way not only for synthesizing BMGs with more den sely packed structures and different properties, but also for understanding the glass formation mechanism. (C) 2001 American Institute of Physics.