Diffusion assisted interaction of shear bands in metallic glasses

被引：3

作者：

Kovacs, Zsolt ^{[1
]}

Revesz, Adam ^{[1
]}

Ezzeldien, Mohammed ^{[1
,2
]}

Lendvai, Janos ^{[1
]}

机构：

[1] Eotvos Lorand Univ, Dept Mat Phys, Pazmany P St 1-A, H-1117 Budapest, Hungary

[2] South Valley Univ, Fac Sci, Dept Phys, Met & Mat Sci Tests Lab, Qena, Egypt

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2020年 / 817卷

关键词：

Metallic glass; Plasticity; Shear band; Diffusion; PLASTIC-DEFORMATION; TORSIONAL DEFORMATION; FRACTURE-TOUGHNESS; LOCALIZATION; DYNAMICS; BEHAVIOR;

D O I：

10.1016/j.jallcom.2019.153327

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Shear bands were formed at room temperature in Zr44Ti11Cu10Ni10Be25 bulk metallic glass subjected to torsional deformation. Shear offset distribution was determined quantitatively for intersecting bands and compared to an elastic continuum shear defect model applied to similar band arrangements. The model reproduced the measured offset distribution, the residual stress field and different asymmetrical features of the band interaction. Differences between the model and the experimental results revealed the presence of a diffusion process for dilatational defects in shear band interaction. (C) 2019 The Authors. Published by Elsevier B.V.

引用

页数：7

共 32 条

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

Inoue, A .

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

[12] Rheology and ultrasonic properties of metallic glass-forming liquids: A potential energy landscape perspective [J].

Johnson, William L. ;

Demetriou, Marios D. ;

Harmon, John S. ;

Lind, Mary L. ;

Samwer, Konrad .

MRS BULLETIN, 2007, 32 (08) :644-650

[13] Stick-slip dynamics and recent insights into shear banding in metallic glasses [J].

Klaumuenzer, David ;

Maass, Robert ;

Loeffler, Joerg F. .

JOURNAL OF MATERIALS RESEARCH, 2011, 26 (12) :1453-1463

[14]

Kovacs I., 1973, Dislocations and Plastic Deformation

[15] Ideal elasto-plastic behavior in torsional deformation of Zr44Ti11Cu10Ni10Be25 bulk metallic glass [J].

Kovacs, Zs. ;

Toth, L. S. ;

Lendvai, J. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2012, 542 :85-89

[16] Localization of plastic deformation along shear bands in Vitreloy bulk metallic glass during high pressure torsion [J].

Kovacs, Zsolt ;

Schafler, Erhard ;

Szommer, Peter ;

Revesz, Adam .

JOURNAL OF ALLOYS AND COMPOUNDS, 2014, 593 :207-212

[17] Characterization of nanometer-scale defects in metallic glasses by quantitative high-resolution transmission electron microscopy [J].

Li, J ;

Wang, ZL ;

Hufnagel, TC .

PHYSICAL REVIEW B, 2002, 65 (14) :1442011-1442016

[18] Inhomogeneous deformation in bulk metallic glasses: FEM analysis [J].

Li, J. C. ;

Chen, X. W. ;

Huang, F. L. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2015, 620 :333-351

[19] Yielding and shear banding of metallic glasses [J].

Liu, Z. Y. ;

Yang, Y. ;

Liu, C. T. .

ACTA MATERIALIA, 2013, 61 (16) :5928-5936

[20] Tuning order in disorder [J].

Ma, Evan .

NATURE MATERIALS, 2015, 14 (06) :547-552

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