Vitrification and determination of the crystallization time scales of the bulk-metallic-glass-forming liquid Zr58.5Nb2.8Cu15.6Ni12.8Al10.3

被引：80

作者：

Hays, CC ^{[1
]}

Schroers, J

Johnson, WL

Rathz, TJ

Hyers, RW

Rogers, JR

Robinson, MB

机构：

[1] CALTECH, Div Engn & Appl Sci, Pasadena, CA 91125 USA

[2] Univ Alabama, Huntsville, AL 35899 USA

[3] NASA, George C Marshall Space Flight Ctr, Huntsville, AL 35812 USA

来源：

APPLIED PHYSICS LETTERS | 2001年 / 79卷 / 11期

关键词：

D O I：

10.1063/1.1398605

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The crystallization kinetics of Zr58.5Nb2.8Cu15.6Ni12.8Al10.3 were studied in an electrostatic levitation (ESL) apparatus. The measured critical cooling rate is 1.75 K/s. Zr58.5Nb2.8Cu15.6Ni12.8Al10.3 is the first bulk-metallic-glass-forming liquid that does not contain beryllium to be vitrified by purely radiative cooling in the ESL. Furthermore, the sluggish crystallization kinetics enable the determination of the time-temperature-transformation (TTT) diagram between the liquidus and the glass transition temperatures. The shortest time to reach crystallization in an isothermal experiment; i.e., the nose of the TTT diagram is 32 s. The nose of the TTT diagram is at 900 K and positioned about 200 K below the liquidus temperature. (C) 2001 American Institute of Physics.

引用

页码：1605 / 1607

页数：3

共 16 条

[1] Large supercooled liquid region and phase separation in the Zr-Ti-Ni-Cu-Be bulk metallic glasses [J].