Energetic criterion on the intrinsic ductility of bulk metallic glasses

被引：17

作者：

Liu, Y. H. ^{[1
]}

Wang, K. ^{[1
]}

Inoue, A. ^{[1
]}

Sakurai, T. ^{[1
]}

Chen, M. W. ^{[1
]}

机构：

[1] Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808578, Japan

来源：

SCRIPTA MATERIALIA | 2010年 / 62卷 / 08期

关键词：

Metallic glasses; Ductility; Shear transformation zone; Poisson's ratio; MECHANICAL-PROPERTIES; FRACTURE; TOUGHNESS; BEHAVIOR; STATE; FLOW;

D O I：

10.1016/j.scriptamat.2009.12.042

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report the use of an energetic criterion to assess the deformability of glassy alloys based on the cooperative shearing model and energy landscape theory. The barrier energy density necessary for the activation of shear transformation zones and the initiation of shear bands shows a strong correlation with the ductility of bulk metallic glasses. This finding directly ties the ductility of metallic glasses to the forming ability of shear bands and offers an energetic insight into the mechanical behavior of metallic glasses. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：586 / 589

页数：4

共 35 条

[1] Athermal shear-transformation-zone theory of amorphous plastic deformation. I. Basic principles [J].

Bouchbinder, Eran ;

Langer, J. S. ;

Procaccia, Itamar .

PHYSICAL REVIEW E, 2007, 75 (03)

[2] GLASSY METALS [J].

CHEN, HS .

REPORTS ON PROGRESS IN PHYSICS, 1980, 43 (04) :353-+

[3] Mechanical behavior of metallic glasses: Microscopic understanding of strength and ductility [J].

Chen, Mingwei .

ANNUAL REVIEW OF MATERIALS RESEARCH, 2008, 38 :445-469

[4] Glassy steel optimized for glass-forming ability and toughness [J].

Demetriou, Marios D. ;

Kaltenboeck, Georg ;

Suh, Jin-Yoo ;

Garrett, Glenn ;

Floyd, Michael ;

Crewdson, Chase ;

Hofmann, Douglas C. ;

Kozachkov, Henry ;

Wiest, Aaron ;

Schramm, Joseph P. ;

Johnson, William L. .

APPLIED PHYSICS LETTERS, 2009, 95 (04)

[5] Lightweight Ti-based bulk metallic glasses excluding late transition metals [J].

Duan, Gang ;

Wiest, Aaron ;

Lind, Mary Laura ;

Kahl, Annelen ;

Johnson, William L. .

SCRIPTA MATERIALIA, 2008, 58 (06) :465-468

[6] Compositional dependence of thermal, elastic, and mechanical properties in Cu-Zr-Ag bulk metallic glasses [J].

Duan, Gang ;

De Blauwe, Katrien ;

Lind, Mary Laura ;

Schramm, Joseph P. ;

Johnson, William L. .

SCRIPTA MATERIALIA, 2008, 58 (03) :159-162

[7] Dynamics of viscoplastic deformation in amorphous solids [J].

Falk, ML ;

Langer, JS .

PHYSICAL REVIEW E, 1998, 57 (06) :7192-7205

[8] Ductility improvement of amorphous steels: Roles of shear modulus and electronic structure [J].

Gu, X. J. ;

Poon, S. Joseph ;

Shiflet, Gary J. ;

Widom, Michael .

ACTA MATERIALIA, 2008, 56 (01) :88-94

[9] Effects of carbon content on the mechanical properties of amorphous steel alloys [J].

Gu, X. J. ;

Poon, S. Joseph ;

Shiflet, Gary J. .

SCRIPTA MATERIALIA, 2007, 57 (04) :289-292

[10] Mechanical properties of iron-based bulk metallic glasses [J].

Gu, X. J. ;

Poon, S. Joseph ;

Shiflet, Gary J. .

JOURNAL OF MATERIALS RESEARCH, 2007, 22 (02) :344-351

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