Bulk metallic glasses: Smaller is softer

被引：210

作者：

Huang, Y. J. ^{[1
]}

Shen, J. ^{[1
]}

Sun, J. F. ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 08期

关键词：

D O I：

10.1063/1.2696502

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The authors report on the dramatic effect of sample size on the plastic deformation capability of a Ti-based bulk metallic glass. Compared with the larger one, the smaller size glassy alloy with the same chemical composition exhibits significantly enhanced plasticity, suggesting a "smaller is softer" trend of metallic glasses. The phenomenon is attributed to the fact that the smaller size alloy, which experienced a faster cooling rate during solidification, contains a larger amount of heats of relaxation and crystallization, favoring the preferential nucleation of shear bands and thus allowing enhanced plasticity upon compressive loading. (c) 2007 American Institute of Physics.

引用

页数：3

共 27 条

[11] Comparison of mechanical behavior between bulk and ribbon Cu-based metallic glasses [J].

Jiang, W. H. ;

Liu, F. X. ;

Wang, Y. D. ;

Zhang, H. F. ;

Choo, H. ;

Liaw, P. K. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 430 (1-2) :350-354

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

Johnson, WL .

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

[13] Characterization of free volume changes associated with shear band formation in Zr- and Cu-based bulk metallic glasses [J].

Kanungo, BP ;

Glade, SC ;

Asoka-Kumar, P ;

Flores, KM .

INTERMETALLICS, 2004, 12 (10-11) :1073-1080

[14] FORMATION OF TI-ZR-CU-NI BULK METALLIC GLASSES [J].

LIN, XH ;

JOHNSON, WL .

JOURNAL OF APPLIED PHYSICS, 1995, 78 (11) :6514-6519

[15] Test environments and mechanical properties of Zr-base bulk amorphous alloys [J].

Liu, CT ;

Heatherly, L ;

Easton, DS ;

Carmichael, CA ;

Schneibel, JH ;

Chen, CH ;

Wright, JL ;

Yoo, MH ;

Horton, JA ;

Inoue, A .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1998, 29 (07) :1811-1820

[16] Embrittlement of a bulk metallic glass due to sub-Tg annealing [J].

Murali, P ;

Ramamurty, U .

ACTA MATERIALIA, 2005, 53 (05) :1467-1478

[17] Simulation of high speed deformation of copper single crystals [J].

Nozaki, T ;

Doyama, M ;

Kogure, Y .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 350 (1-2) :233-237

[18] Plastic buckling of tubes under axial compression and internal pressure [J].

Paquette, J. A. ;

Kyriakides, S. .

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2006, 48 (08) :855-867

[19] Correlation between enthalpy change and free volume reduction during structural relaxation of Zr55Cu30Al10Ni5 metallic glass [J].

Slipenyuk, A ;

Eckert, J .

SCRIPTA MATERIALIA, 2004, 50 (01) :39-44

[20] MICROSCOPIC MECHANISM FOR STEADY-STATE INHOMOGENEOUS FLOW IN METALLIC GLASSES [J].

SPAEPEN, F .

ACTA METALLURGICA, 1977, 25 (04) :407-415

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