Deformation-enhanced hierarchical multiscale structure heterogeneity in a Pd-Si bulk metallic glass

被引：58

作者：

Liu, Sinan ^{[1
]}

Wang, Lifeng ^{[1
,2
]}

Ge, Jiacheng ^{[1
]}

Wu, Zhenduo ^{[3
]}

Ke, Yubin ^{[4
]}

Li, Qiang ^{[5
]}

Sun, Baoan ^{[6
,7
]}

Feng, Tao ^{[1
]}

Wu, Yuan ^{[8
]}

Wang, J. T. ^{[1
]}

Hahn, Horst ^{[1
,9
]}

Ren, Yang ^{[10
]}

Almer, Jonathan D. ^{[10
]}

Wang, Xun-li ^{[3
]}

Lan, Si ^{[1
,3
]}

机构：

[1] Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Herbert Gleiter Inst Nanosci, Nanjing 210094, Peoples R China

[2] Nanjing Huaxing Pressure Vessel Manufacture Co Lt, 2 Dong Feng Rd, Nanjing, Jiangsu, Peoples R China

[3] City Univ Hong Kong, Dept Phys, 83 Tat Chee Ave, Hong Kong, Peoples R China

[4] Chinese Acad Sci, Inst High Energy Phys, Dongguan Branch, China Spallat Neutron Source, Dongguan 523803, Peoples R China

[5] Xinjiang Univ, Sch Phys Sci & Technol, Urumqi 830046, Xinjiang, Peoples R China

[6] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[7] Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China

[8] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 10083, Peoples R China

[9] Karlsruhe Inst Technol KIT, Inst Nanotechnol, D-76344 Eggenstein Leopoldshafen, Germany

[10] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA

来源：

ACTA MATERIALIA | 2020年 / 200卷

基金：

中国国家自然科学基金;

关键词：

Bulk metallic glass; Hierarchical heterogeneities; Work-hardening; MULTIPLE SHEAR BANDS; PLASTIC-DEFORMATION; MECHANICAL-BEHAVIOR; FRACTURE; PHASE; TOUGHNESS; TRANSITION; DYNAMICS; LIQUID; ORIGIN;

D O I：

10.1016/j.actamat.2020.08.077

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The multiscale structures in a Pd82Si18 binary bulk metallic glass before and after deformation were studied using electron microscopies, high-energy synchrotron X-ray diffraction, and small-angle scattering techniques. The experimental results revealed an enhancement of hierarchical structure heterogeneities on multiple length scales after deformation. Hierarchical multiple shear bands of high number density were observed after bending, introducing complex but periodically distributed residual strain. Pair distribution function analysis revealed that the connectivity of the short-range clusters on the medium-range scale determines the packing density difference between the tension side and the compression side in the sample after bending. In-situ synchrotron X-ray diffraction study also revealed a transformation of connection modes among short-range clusters under uniaxial tension and compression, which is consistent with those of triaxial tension/compression parts upon bending in Pd82Si18 glassy alloys. The nanoscale heterogeneities for metallic glasses after deformation observed by small-angle scattering and transmission electron microscopy may be attributed to the nanoscale amorphous phase separation and interacting multiple shear bands enhanced by plastic deformation. Our findings suggested that the enhancement of hierarchical heterogeneous structure on multiple length scales may explain the excellent plasticity of Pd-Si glassy alloys, deepening the understanding of structure-property relation during plastic deformation in metallic glasses. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：42 / 55

页数：14

共 77 条

[61] Structural modifications in sub-Tg annealed CuZr-based metallic glass [J].

Sarac, B. ;

Bernasconi, A. ;

Wright, J. ;

Stoica, M. ;

Spieckermann, F. ;

Muehlbacher, M. ;

Keckes, J. ;

Bian, X. ;

Wang, G. ;

Eckert, J. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2017, 707 :245-252

[62] Ductile bulk metallic glass [J].

Schroers, J ;

Johnson, WL .

PHYSICAL REVIEW LETTERS, 2004, 93 (25) :255506-1

[63] Overview No.144 - Mechanical behavior of amorphous alloys [J].

Schuh, Christopher A. ;

Hufnagel, Todd C. ;

Ramamurty, Upadrasta .

ACTA MATERIALIA, 2007, 55 (12) :4067-4109

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

SPAEPEN, F .

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

[65] ROLE OF ATOMIC BONDING FOR COMPOUND AND GLASS-FORMATION IN NI-SI PD-SI AND NI-B SYSTEMS [J].

TANAKA, K ;

SAITO, T ;

SUZUKI, K ;

HASEGAWA, R .

PHYSICAL REVIEW B, 1985, 32 (10) :6853-6860

[66] Hierarchical heterogeneity and an elastic microstructure observed in a metallic glass alloy [J].

Tsai, Peter ;

Kranjc, Kelly ;

Flores, Katharine M. .

ACTA MATERIALIA, 2017, 139 :11-20

[67] THE GLASS-TRANSITION AS A FREE-VOLUME RELATED KINETIC PHENOMENON [J].

VANDENBEUKEL, A ;

SIETSMA, J .

ACTA METALLURGICA ET MATERIALIA, 1990, 38 (03) :383-389

[68] Fatigue initiation and propagation behavior in bulk-metallic glasses under a bending load [J].

Wang, Gongyao ;

Liaw, Peter K. ;

Jin, Xiaoqing ;

Yokoyama, Yoshihiko ;

Huang, E-Wen ;

Jiang, Feng ;

Keer, Leon M. ;

Inoue, Akihisa .

JOURNAL OF APPLIED PHYSICS, 2010, 108 (11)

[69] Two-step work-hardening and its gigantic toughening effect in Zr-based bulk metallic glasses [J].

Wang, Tuo ;

Si, Jiajia ;

Wu, Yidong ;

Lv, Kuang ;

Liu, Yanhui ;

Hui, Xidong .

SCRIPTA MATERIALIA, 2018, 150 :106-109

[70] Densification and Strain Hardening of a Metallic Glass under Tension at Room Temperature [J].

Wang, Z. T. ;

Pan, J. ;

Li, Y. ;

Schuh, C. A. .

PHYSICAL REVIEW LETTERS, 2013, 111 (13)

← 1 2 3 4 5 6 7 8 →