Correlating the supercooled liquid region width with the fragility parameter in bulk metallic glasses

被引：15

作者：

Hu, L. ^{[1
]}

Ye, F. ^{[1
]}

Liang, Y. F. ^{[1
]}

Lin, J. P. ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 02期

关键词：

FORMING ABILITY CRITERION; MEDIUM-RANGE ORDER; VISCOUS-FLOW; TRANSITION; VISCOSITY; KINETICS; CRYSTALLIZATION; THERMODYNAMICS; EQUILIBRIUM; RELAXATION;

D O I：

10.1063/1.3675910

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A linear correlation of fragility parameter D* with supercooled liquid region width Delta T-x for Ca-based bulk metallic glasses (BMGs) was revealed. This relationship is found in La- and Zr-based BMGs as well and extended to several glass-forming systems. The origin of this phenomenon lies in the close relation between crystallization and temperature dependence of viscosity. This relationship can be formulated by Delta T-x(0.33) = 6.8 x 10(-3) x (D*)(T-g(0.33)) + 2(K), indicating that the unique variation of the viscosity with the temperature correlates with the location and width of the supercooled liquid region. Moreover, an approximation of fragility parameter D* for BMGs can be evaluated by the formula. (C) 2012 American Institute of Physics. [doi: 10.1063/1.3675910]

引用

页数：3

共 42 条

[11] ATOMIC DIFFUSION IN THE SUPERCOOLED LIQUID AND GLASSY STATES OF THE ZR41.2TIL3.8CU12.5NI10BE22.5 ALLOY [J].

GEYER, U ;

SCHNEIDER, S ;

JOHNSON, WL ;

QIU, Y ;

TOMBRELLO, TA ;

MACHT, MP .

PHYSICAL REVIEW LETTERS, 1995, 75 (12) :2364-2367

[12] Viscous flow of the Cu47Ti34Zr11Ni8 glass forming alloy [J].

Glade, SC ;

Johnson, WL .

JOURNAL OF APPLIED PHYSICS, 2000, 87 (10) :7249-7251

[13] CaAl-based bulk metallic glasses with high thermal stability [J].

Guo, FQ ;

Poon, SJ ;

Shiflet, GJ .

APPLIED PHYSICS LETTERS, 2004, 84 (01) :37-39

[14] Glass-forming ability and fragility of RE55Al25Co20 (RE = Ce, Pr, Nd, Sm, Gd) [J].

Guo, Jing ;

Bian, Xiufang ;

Meng, Qingge ;

Zhao, Yan ;

Wang, Shenghai ;

Wang, Caidong ;

Li, Taibao .

SCRIPTA MATERIALIA, 2006, 55 (11) :1027-1030

[15] New glass forming ability criterion derived from cooling consideration [J].

Guo, Sheng ;

Liu, C. T. .

INTERMETALLICS, 2010, 18 (11) :2065-2068

[16] Ca-Mg-Zn-(Ag) bulk metallic glasses prepared by unidirectional quenching [J].

Hu, L. ;

Liu, B. Y. ;

Ye, F. ;

Wei, B. C. ;

Chen, G. L. .

INTERMETALLICS, 2011, 19 (05) :662-665

[17] Stabilization of metallic supercooled liquid and bulk amorphous alloys [J].

Inoue, A .

ACTA MATERIALIA, 2000, 48 (01) :279-306

[18] Comparison of bulk metallic glass formation between Cu-Hf binary and Cu-Hf-Al ternary alloys [J].

Jia, Peng ;

Xu, Jian .

JOURNAL OF MATERIALS RESEARCH, 2009, 24 (01) :96-106

[19] Pressure effect on glass transition in a Zr65Al7.5Cu27.5 metallic glass [J].

Jin, HJ ;

Wen, P ;

Lu, K .

APPLIED PHYSICS LETTERS, 2003, 83 (16) :3284-3286

[20] Bulk glass-forming metallic alloys: Science and technology [J].

Johnson, WL .

MRS BULLETIN, 1999, 24 (10) :42-56

← 1 2 3 4 5 →