Ductility of bulk metallic glass composites: Microstructural effects

被引：30

作者：

Abdeljawad, F. ^{[1
]}

Fontus, M. ^{[2
]}

Haataja, M. ^{[1
,3
,4
]}

机构：

[1] Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA

[2] Prairie View A&M Univ, Undergraduate Med Acad, Prairie View, TX 77446 USA

[3] Princeton Univ, Princeton Inst Sci & Technol Mat PRISM, Princeton, NJ 08544 USA

[4] Princeton Univ, Program Appl & Computat Math PACM, Princeton, NJ 08544 USA

来源：

APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 03期

关键词：

MATRIX COMPOSITES; TENSILE DUCTILITY; DEFORMATION;

D O I：

10.1063/1.3531660

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Recent experimental findings suggest that the problem of catastrophic failure by shear band propagation in monolithic bulk metallic glasses (BMGs) can be mitigated by forming two-phase composites consisting of a glassy metal matrix phase and a soft crystalline reinforcement phase. Here, we employ a recently introduced phase-field model in two spatial dimensions, capable of capturing shear banding in BMG systems, to address the effects of microstructure on the mechanical properties of BMG composites. We identify an important geometric length scale associated with the dendritic particles and demonstrate that it controls the overall ductility and ultimate strength of such BMG composites. (C) 2011 American Institute of Physics. [doi:10.1063/1.3531660]

引用

页数：3

共 14 条

[1] Continuum Modeling of Bulk Metallic Glasses and Composites [J].

Abdeljawad, Fadi ;

Haataja, Mikko .

PHYSICAL REVIEW LETTERS, 2010, 105 (12)

[2] Bulk metallic glass matrix composites [J].

Choi-Yim, H ;

Johnson, WL .

APPLIED PHYSICS LETTERS, 1997, 71 (26) :3808-3810

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

Falk, ML ;

Langer, JS .

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

[4] Metallic glass matrix composite with precipitated ductile reinforcement [J].

Fan, C ;

Ott, RT ;

Hufnagel, TC .

APPLIED PHYSICS LETTERS, 2002, 81 (06) :1020-1022

[5] METALLIC GLASSES [J].

GREER, AL .

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

[6] Designing metallic glass matrix composites with high toughness and tensile ductility [J].

Hofmann, Douglas C. ;

Suh, Jin-Yoo ;

Wiest, Aaron ;

Duan, Gang ;

Lind, Mary-Laura ;

Demetriou, Marios D. ;

Johnson, William L. .

NATURE, 2008, 451 (7182) :1085-U3

[7] Development of tough, low-density titanium-based bulk metallic glass matrix composites with tensile ductility [J].

Hofmann, Douglas C. ;

Suh, Jin-Yoo ;

Wiest, Aaron ;

Lind, Mary-Laura ;

Demetriou, Marios D. ;

Johnson, William L. .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2008, 105 (51) :20136-20140

[8] Mesoscale modeling of amorphous metals by shear transformation zone dynamics [J].

Homer, Eric R. ;

Schuh, Christopher A. .

ACTA MATERIALIA, 2009, 57 (09) :2823-2833

[9] Solution to the problem of the poor cyclic fatigue resistance of bulk metallic glasses [J].

Launey, Maximilien E. ;

Hofmann, Douglas C. ;

Johnson, William L. ;

Ritchie, Robert O. .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2009, 106 (13) :4986-4991

[10] Effect of a controlled volume fraction of dendritic phases on tensile and compressive ductility in La-based metallic glass [J].

Lee, ML ;

Li, Y ;

Schuh, CA .

ACTA MATERIALIA, 2004, 52 (14) :4121-4131

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