Effect of a controlled volume fraction of dendritic phases on tensile and compressive ductility in La-based metallic glass matrix composites

M. L. Lee; Y. Li; C. A. Schuh

doi:10.1016/j.actamat.2004.05.025

Effect of a controlled volume fraction of dendritic phases on tensile and compressive ductility in La-based metallic glass matrix composites

M. L. Lee
, Y. Li^*
, C. A. Schuh

^*Corresponding author for this work

National University of Singapore
Massachusetts Institute of Technology

Research output: Contribution to journal › Article › peer-review

236 Scopus citations

Abstract

A systematic study has been carried out to identify the effect of crystalline second phase reinforcements on the mechanical properties of amorphous alloys based on the composition La_86-yAl₁₄(Cu, Ni)_y (y = 1-24). By varying the composition in a controlled manner, composites with a tailorable fraction of in situ dendritic reinforcements were produced. Tension, compression and impact tests showed considerably improved mechanical properties with a large amount of plasticity when the reinforcement volume fraction exceeded a critical value near 40%, and the tension/compression asymmetry associated with glass plasticity is reduced as the volume fraction of crystalline reinforcements rises.

Original language	English
Pages (from-to)	4121-4131
Number of pages	11
Journal	Acta Materialia
Volume	52
Issue number	14
DOIs	https://doi.org/10.1016/j.actamat.2004.05.025
State	Published - 16 Aug 2004
Externally published	Yes

Keywords

Bulk amorphous materials
Composites
Mechanical properties

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10.1016/j.actamat.2004.05.025

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title = "Effect of a controlled volume fraction of dendritic phases on tensile and compressive ductility in La-based metallic glass matrix composites",

abstract = "A systematic study has been carried out to identify the effect of crystalline second phase reinforcements on the mechanical properties of amorphous alloys based on the composition La86-yAl14(Cu, Ni)y (y = 1-24). By varying the composition in a controlled manner, composites with a tailorable fraction of in situ dendritic reinforcements were produced. Tension, compression and impact tests showed considerably improved mechanical properties with a large amount of plasticity when the reinforcement volume fraction exceeded a critical value near 40\%, and the tension/compression asymmetry associated with glass plasticity is reduced as the volume fraction of crystalline reinforcements rises.",

keywords = "Bulk amorphous materials, Composites, Mechanical properties",

author = "Lee, \{M. L.\} and Y. Li and Schuh, \{C. A.\}",

year = "2004",

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T1 - Effect of a controlled volume fraction of dendritic phases on tensile and compressive ductility in La-based metallic glass matrix composites

AU - Lee, M. L.

AU - Li, Y.

AU - Schuh, C. A.

PY - 2004/8/16

Y1 - 2004/8/16

N2 - A systematic study has been carried out to identify the effect of crystalline second phase reinforcements on the mechanical properties of amorphous alloys based on the composition La86-yAl14(Cu, Ni)y (y = 1-24). By varying the composition in a controlled manner, composites with a tailorable fraction of in situ dendritic reinforcements were produced. Tension, compression and impact tests showed considerably improved mechanical properties with a large amount of plasticity when the reinforcement volume fraction exceeded a critical value near 40%, and the tension/compression asymmetry associated with glass plasticity is reduced as the volume fraction of crystalline reinforcements rises.

AB - A systematic study has been carried out to identify the effect of crystalline second phase reinforcements on the mechanical properties of amorphous alloys based on the composition La86-yAl14(Cu, Ni)y (y = 1-24). By varying the composition in a controlled manner, composites with a tailorable fraction of in situ dendritic reinforcements were produced. Tension, compression and impact tests showed considerably improved mechanical properties with a large amount of plasticity when the reinforcement volume fraction exceeded a critical value near 40%, and the tension/compression asymmetry associated with glass plasticity is reduced as the volume fraction of crystalline reinforcements rises.

KW - Bulk amorphous materials

KW - Composites

KW - Mechanical properties

UR - https://www.scopus.com/pages/publications/3242731507

U2 - 10.1016/j.actamat.2004.05.025

DO - 10.1016/j.actamat.2004.05.025

M3 - 文章

AN - SCOPUS:3242731507

SN - 1359-6454

VL - 52

SP - 4121

EP - 4131

JO - Acta Materialia

JF - Acta Materialia

IS - 14

ER -

Effect of a controlled volume fraction of dendritic phases on tensile and compressive ductility in La-based metallic glass matrix composites

Abstract

Keywords

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