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

[1] PLASTIC-DEFORMATION IN METALLIC GLASSES [J].

ARGON, AS .

ACTA METALLURGICA, 1979, 27 (01) :47-58

[2] Tracer Measurements of Atomic Diffusion inside Shear Bands of a Bulk Metallic Glass [J].

Bokeloh, Joachim ;

Divinski, Sergiy V. ;

Reglitz, Gerrit ;

Wilde, Gerhard .

PHYSICAL REVIEW LETTERS, 2011, 107 (23)

[3] CONTINUOUS SERIES OF METASTABLE SOLID SOLUTIONS IN SILVER-COPPER ALLOYS [J].

DUWEZ, P ;

WILLENS, RH ;

KLEMENT, W .

JOURNAL OF APPLIED PHYSICS, 1960, 31 (06) :1136-1137

[4] Stages in room temperature torsional deformation of a Vitreloy bulk metallic glass [J].

Ezzeldien, Mohammed ;

Kovacs, Zsolt ;

Lendvai, Janos ;

Chmelik, Frantisek ;

Mathis, Kristian .

JOURNAL OF ALLOYS AND COMPOUNDS, 2013, 577 :25-29

[5] Atomic structure of shear bands in Cu64Zr36 metallic glasses studied by molecular dynamics simulations [J].

Feng, Shidong ;

Qi, Li ;

Wang, Limin ;

Pan, Shaopeng ;

Ma, Mingzhen ;

Zhang, Xinyu ;

Li, Gong ;

Liu, Riping .

ACTA MATERIALIA, 2015, 95 :236-243

[6] Fracture toughness and fatigue-crack propagation in a Zr-Ti-Ni-Cu-Be bulk metallic glass [J].

Gilbert, CJ ;

Ritchie, RO ;

Johnson, WL .

APPLIED PHYSICS LETTERS, 1997, 71 (04) :476-478

[7] Shear bands in metallic glasses [J].

Greer, A. L. ;

Cheng, Y. Q. ;

Ma, E. .

MATERIALS SCIENCE & ENGINEERING R-REPORTS, 2013, 74 (04) :71-132

[8] METALLIC GLASSES [J].

GREER, AL .

SCIENCE, 1995, 267 (5206) :1947-1953

[9] Post-shear deformation of high pressure torsion-deformed nickel under hydrostatic pressure [J].

Hafok, M. ;

Pippan, R. .

SCRIPTA MATERIALIA, 2007, 56 (09) :757-760

[10] Examining the initial stages of shear localization in amorphous metals [J].

Homer, Eric R. .

ACTA MATERIALIA, 2014, 63 :44-53

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