Effect of nano-crystallization on the plasticity in Cu-Zr amorphous binary alloys

被引：9

作者：

Yedla, Natraj ^{[1
]}

Srinivas, M. ^{[2
]}

Ghosh, Sudipto ^{[1
]}

Majumdar, Bhaskar ^{[2
]}

机构：

[1] Indian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, India

[2] Def Met Res Lab, Adv Magnet Grp, Hyderabad 500058, Andhra Pradesh, India

来源：

INTERMETALLICS | 2010年 / 18卷 / 12期

关键词：

Glasses; metallic Mechanical properties at ambient temperature Rapid solidification processing; Simulations; atomistic; BULK METALLIC-GLASS; YIELD CRITERION; DEFORMATION; NANOINDENTATION; SIMULATIONS; DUCTILITY; FRACTURE; FLOW;

D O I：

10.1016/j.intermet.2010.08.035

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：

Two types of stress-strain behaviors were observed during tensile deformation of Cu-Zr amorphous ribbons at room temperature and at strain rates varying between 10(-3) s(-1) and 10(-5) s(-1). Experimental observations carried out using HRTEM and XRD on the extent of nano-crystallization during the deformation revealed that the extent of nano-crystallization determines the nature of stress-strain behavior. Molecular dynamics simulations (MD) were carried out to support the inference. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：2419 / 2424

页数：6

共 35 条

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

ARGON, AS .

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

[2] Plastic flow and tensile ductility of a bulk amorphous Zr55Al10Cu30Ni5 alloy at 700 K [J].

Chu, JP ;

CHiang, CL ;

Mahalingam, T ;

Nieh, TG .

SCRIPTA MATERIALIA, 2003, 49 (05) :435-440

[3] Work-hardenable ductile bulk metallic glass [J].

Das, J ;

Tang, MB ;

Kim, KB ;

Theissmann, R ;

Baier, F ;

Wang, WH ;

Eckert, J .

PHYSICAL REVIEW LETTERS, 2005, 94 (20)

[4] A YIELD CRITERION FOR PD40NI40P20 METALLIC-GLASS [J].

DONOVAN, PE .

ACTA METALLURGICA, 1989, 37 (02) :445-456

[5] 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

[6]

Duhamel C, 2008, REV ADV MATER SCI, V18, P527

[7]

EN MA, 2003, NAT MATER, V2, P7

[8] A SIMPLE EMPIRICAL N-BODY POTENTIAL FOR TRANSITION-METALS [J].

FINNIS, MW ;

SINCLAIR, JE .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1984, 50 (01) :45-55

[9]

Hajlaoui K, 2008, REV ADV MATER SCI, V18, P23

[10] 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

← 1 2 3 4 →