Near-ideal strength and large compressive deformability of a nano-dual-phase glass-crystal alloy in sub-micron

Ge Wu; Ligang Sun; Linli Zhu; Chang Liu; Qing Wang; Yan Bao; Jian Lu

doi:10.1016/j.scriptamat.2020.07.056

Near-ideal strength and large compressive deformability of a nano-dual-phase glass-crystal alloy in sub-micron

Ge Wu
, Ligang Sun
, Linli Zhu
, Chang Liu
, Qing Wang
, Yan Bao
, Jian Lu^*

^*Corresponding author for this work

City University of Hong Kong
Max Planck Institute for Iron Research
Harbin Institute of Technology Shenzhen
Zhejiang University
Shanghai University
City University of Hong Kong Shenzhen Research Institute

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

21 Scopus citations

Abstract

We report a room temperature ultrahigh yield strength (3.0 GPa in compression) and large deformability (above 50% compressive strain) of a magnesium-based nano-dual-phase glass-crystal alloy in sub-micro size, compared with brittle nature of its own structural units. Transmission electron microscope investigation, molecular dynamic simulation and constitutive modeling were conducted, showing that the nanostructure of extremely small sized nanocrystals embedded in the glassy shells results in near-ideal strength; plastic flow of the glassy phase and grain refinement of the crystalline phase contribute to the large deformability. This material design may provide broad implications in wearable flexible devices and high-performance nano-electromechanical systems.

Original language	English
Pages (from-to)	290-295
Number of pages	6
Journal	Scripta Materialia
Volume	188
DOIs	https://doi.org/10.1016/j.scriptamat.2020.07.056
State	Published - Nov 2020
Externally published	Yes

Keywords

Deformability
Dual phases
Metallic glass
Nanocomposite
Sputtering

Access to Document

10.1016/j.scriptamat.2020.07.056

Cite this

@article{1ab9b2935ec94867a9638b7003da1529,

title = "Near-ideal strength and large compressive deformability of a nano-dual-phase glass-crystal alloy in sub-micron",

abstract = "We report a room temperature ultrahigh yield strength (3.0 GPa in compression) and large deformability (above 50\% compressive strain) of a magnesium-based nano-dual-phase glass-crystal alloy in sub-micro size, compared with brittle nature of its own structural units. Transmission electron microscope investigation, molecular dynamic simulation and constitutive modeling were conducted, showing that the nanostructure of extremely small sized nanocrystals embedded in the glassy shells results in near-ideal strength; plastic flow of the glassy phase and grain refinement of the crystalline phase contribute to the large deformability. This material design may provide broad implications in wearable flexible devices and high-performance nano-electromechanical systems.",

keywords = "Deformability, Dual phases, Metallic glass, Nanocomposite, Sputtering",

author = "Ge Wu and Ligang Sun and Linli Zhu and Chang Liu and Qing Wang and Yan Bao and Jian Lu",

note = "Publisher Copyright: {\textcopyright} 2020",

year = "2020",

month = nov,

doi = "10.1016/j.scriptamat.2020.07.056",

language = "英语",

volume = "188",

pages = "290--295",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Acta Materialia Inc",

}

TY - JOUR

T1 - Near-ideal strength and large compressive deformability of a nano-dual-phase glass-crystal alloy in sub-micron

AU - Wu, Ge

AU - Sun, Ligang

AU - Zhu, Linli

AU - Liu, Chang

AU - Wang, Qing

AU - Bao, Yan

AU - Lu, Jian

PY - 2020/11

Y1 - 2020/11

N2 - We report a room temperature ultrahigh yield strength (3.0 GPa in compression) and large deformability (above 50% compressive strain) of a magnesium-based nano-dual-phase glass-crystal alloy in sub-micro size, compared with brittle nature of its own structural units. Transmission electron microscope investigation, molecular dynamic simulation and constitutive modeling were conducted, showing that the nanostructure of extremely small sized nanocrystals embedded in the glassy shells results in near-ideal strength; plastic flow of the glassy phase and grain refinement of the crystalline phase contribute to the large deformability. This material design may provide broad implications in wearable flexible devices and high-performance nano-electromechanical systems.

AB - We report a room temperature ultrahigh yield strength (3.0 GPa in compression) and large deformability (above 50% compressive strain) of a magnesium-based nano-dual-phase glass-crystal alloy in sub-micro size, compared with brittle nature of its own structural units. Transmission electron microscope investigation, molecular dynamic simulation and constitutive modeling were conducted, showing that the nanostructure of extremely small sized nanocrystals embedded in the glassy shells results in near-ideal strength; plastic flow of the glassy phase and grain refinement of the crystalline phase contribute to the large deformability. This material design may provide broad implications in wearable flexible devices and high-performance nano-electromechanical systems.

KW - Deformability

KW - Dual phases

KW - Metallic glass

KW - Nanocomposite

KW - Sputtering

UR - https://www.scopus.com/pages/publications/85088892509

U2 - 10.1016/j.scriptamat.2020.07.056

DO - 10.1016/j.scriptamat.2020.07.056

M3 - 文章

AN - SCOPUS:85088892509

SN - 1359-6462

VL - 188

SP - 290

EP - 295

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Near-ideal strength and large compressive deformability of a nano-dual-phase glass-crystal alloy in sub-micron

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this