Enhanced mechanical properties of multilayered micropillars of amorphous ZrCuTi and nanocrystalline Ta layers

被引：36

作者：

Chou, H. S. ^{[1
]}

Du, X. H. ^{[1
,2
]}

Lee, C. J. ^{[1
]}

Huang, J. C. ^{[1
]}

机构：

[1] Natl Sun Yat Sen Univ, Ctr Nanosci & Nanotechnol, Dept Mat & Optoelect Sci, Kaohsiung 804, Taiwan

[2] Shenyang Aerosp Univ, Sch Mat Sci & Engn, Shenyang 110034, Peoples R China

来源：

INTERMETALLICS | 2011年 / 19卷 / 07期

关键词：

Multiphase intermetallics; Glasses; metallic; Thin films; Phase interfaces; Mechanical properties; theory; BULK METALLIC-GLASS; THIN-FILM; NANOLAMINATE; COMPOSITES; DUCTILITY; BEHAVIOR; ALLOYS;

D O I：

10.1016/j.intermet.2011.03.015

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：

This paper presents the room-temperature mechanical response of as-sputtered amorphous ZrCuTi/crystalline Ta pillars evaluated by micro-compression test. Compared with monolithic ZrCuTi amorphous micro-pillar, the composited pillars exhibits considerably enhanced yield stress as well as improved deforming ability. Instead of the prediction based on iso-stress rule of mixture, the stress of such multilayered micropillars can be well predicted by another model. The positive mechanical properties are attributed to the positive effects from the high-stiffness Ta layers, which do not involve in formation of shear bands but can retard shear bands propagation via forming "plastic zone" in the constrained amorphous ZrCuTi layers. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1047 / 1051

页数：5

共 25 条

[1] ON CRACK EXTENSION IN DUCTILE/BRITTLE LAMINATES [J].