Compressive ductility and fracture resistance in CuZr-based shape-memory metallic-glass composites

Xiaoling Fu; Gang Wang; Yuan Wu; Wenli Song; Chan Hung Shek; Yong Zhang; Jun Shen; Robert O. Ritchie

doi:10.1016/j.ijplas.2020.102687

Compressive ductility and fracture resistance in CuZr-based shape-memory metallic-glass composites

Xiaoling Fu, Gang Wang, Yuan Wu, Wenli Song, Chan Hung Shek, Yong Zhang, Jun Shen^*, Robert O. Ritchie^*

^*Corresponding author for this work

Department of Materials Science and Engineering

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

65 Citations (Scopus)

Abstract

The uniaxial compression behavior of Cu_51.5Zr_48.5 shape-memory metallic-glass composites was systematically studied, from the perspective of discerning the salient micro-mechanisms controlling their deformation and fracture. Microstructurally, it was found that the particle size and volume fraction of CuZr precipitates formed in these glasses were highly sensitive to cooling rate and casting environment. Plastic flow was induced by a martensitic transformation of the CuZr particles in these materials, with additional contributions to their inelasticity arising from microcracking and crack deflection, which further served to promote ductility and resist fracture.

Original language	English
Article number	102687
Journal	International Journal of Plasticity
Volume	128
Online published	4 Feb 2020
DOIs	https://doi.org/10.1016/j.ijplas.2020.102687
Publication status	Published - May 2020

Research Keywords

Martensitic transformation
Shape memory
Crack deflection
Surface relief
Microcracking

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title = "Compressive ductility and fracture resistance in CuZr-based shape-memory metallic-glass composites",

abstract = "The uniaxial compression behavior of Cu51.5Zr48.5 shape-memory metallic-glass composites was systematically studied, from the perspective of discerning the salient micro-mechanisms controlling their deformation and fracture. Microstructurally, it was found that the particle size and volume fraction of CuZr precipitates formed in these glasses were highly sensitive to cooling rate and casting environment. Plastic flow was induced by a martensitic transformation of the CuZr particles in these materials, with additional contributions to their inelasticity arising from microcracking and crack deflection, which further served to promote ductility and resist fracture.",

keywords = "Martensitic transformation, Shape memory, Crack deflection, Surface relief, Microcracking",

author = "Xiaoling Fu and Gang Wang and Yuan Wu and Wenli Song and Shek, {Chan Hung} and Yong Zhang and Jun Shen and Ritchie, {Robert O.}",

year = "2020",

month = may,

doi = "10.1016/j.ijplas.2020.102687",

language = "English",

volume = "128",

journal = "International Journal of Plasticity",

issn = "0749-6419",

publisher = "Elsevier Ltd.",

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TY - JOUR

T1 - Compressive ductility and fracture resistance in CuZr-based shape-memory metallic-glass composites

AU - Fu, Xiaoling

AU - Wang, Gang

AU - Wu, Yuan

AU - Song, Wenli

AU - Shek, Chan Hung

AU - Zhang, Yong

AU - Shen, Jun

AU - Ritchie, Robert O.

PY - 2020/5

Y1 - 2020/5

N2 - The uniaxial compression behavior of Cu51.5Zr48.5 shape-memory metallic-glass composites was systematically studied, from the perspective of discerning the salient micro-mechanisms controlling their deformation and fracture. Microstructurally, it was found that the particle size and volume fraction of CuZr precipitates formed in these glasses were highly sensitive to cooling rate and casting environment. Plastic flow was induced by a martensitic transformation of the CuZr particles in these materials, with additional contributions to their inelasticity arising from microcracking and crack deflection, which further served to promote ductility and resist fracture.

AB - The uniaxial compression behavior of Cu51.5Zr48.5 shape-memory metallic-glass composites was systematically studied, from the perspective of discerning the salient micro-mechanisms controlling their deformation and fracture. Microstructurally, it was found that the particle size and volume fraction of CuZr precipitates formed in these glasses were highly sensitive to cooling rate and casting environment. Plastic flow was induced by a martensitic transformation of the CuZr particles in these materials, with additional contributions to their inelasticity arising from microcracking and crack deflection, which further served to promote ductility and resist fracture.

KW - Martensitic transformation

KW - Shape memory

KW - Crack deflection

KW - Surface relief

KW - Microcracking

UR - http://www.scopus.com/inward/record.url?scp=85081642265&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85081642265&origin=recordpage

U2 - 10.1016/j.ijplas.2020.102687

DO - 10.1016/j.ijplas.2020.102687

M3 - RGC 21 - Publication in refereed journal

SN - 0749-6419

VL - 128

JO - International Journal of Plasticity

JF - International Journal of Plasticity

M1 - 102687

ER -

Compressive ductility and fracture resistance in CuZr-based shape-memory metallic-glass composites

Abstract

Research Keywords

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