Enhancing dynamic mechanical properties of bulk metallic glass composites via deformation-induced martensitic transformation

Jie Zhou; Honghui Wu; Yuan Wu; Wenli Song; Rong Chen; Chengwen Tan; Guoliang Xie; Di Cao; Hui Wang; Xiongjun Liu; Suihe Jiang; Xianzhen Wang; Zhaoping Lu

doi:10.1016/j.scriptamat.2020.05.012

Enhancing dynamic mechanical properties of bulk metallic glass composites via deformation-induced martensitic transformation

Jie Zhou, Honghui Wu, Yuan Wu^*, Wenli Song, Rong Chen, Chengwen Tan, Guoliang Xie, Di Cao, Hui Wang, Xiongjun Liu, Suihe Jiang, Xianzhen Wang, Zhaoping Lu

^*Corresponding author for this work

School of Material Science and Engineering

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

23 Citations (Scopus)

Abstract

Due to the lack of plastic strain accommodation and work-hardening capability, brittleness still dominates dynamic deformation in most bulk metallic glass composites (BMGCs). Herein, we present a series of Zr-based BMGCs characterized with a unique combination of fracture strain of ~15%, ultimate strength of ~1550 MPa and unusual two-stage work-hardening behavior upon dynamic loading. The strain-induced martensitic transformation occurred, not only homogenizes the dynamic plastic flow, but also compensates the amorphous work-softening. Our work highlights a novel route for developing high-performance BMGCs for high-speed applications, and sheds new insights on the deformation mechanisms of BMGCs.

Original language	English
Pages (from-to)	346-351
Number of pages	6
Journal	Scripta Materialia
Volume	186
DOIs	https://doi.org/10.1016/j.scriptamat.2020.05.012
Publication status	Published - Sept 2020

Keywords

Bulk metallic glass composite
dynamic deformation behavior
martensitic transformation
transformation-induced plasticity
work-hardening

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10.1016/j.scriptamat.2020.05.012

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title = "Enhancing dynamic mechanical properties of bulk metallic glass composites via deformation-induced martensitic transformation",

abstract = "Due to the lack of plastic strain accommodation and work-hardening capability, brittleness still dominates dynamic deformation in most bulk metallic glass composites (BMGCs). Herein, we present a series of Zr-based BMGCs characterized with a unique combination of fracture strain of ~15%, ultimate strength of ~1550 MPa and unusual two-stage work-hardening behavior upon dynamic loading. The strain-induced martensitic transformation occurred, not only homogenizes the dynamic plastic flow, but also compensates the amorphous work-softening. Our work highlights a novel route for developing high-performance BMGCs for high-speed applications, and sheds new insights on the deformation mechanisms of BMGCs.",

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T1 - Enhancing dynamic mechanical properties of bulk metallic glass composites via deformation-induced martensitic transformation

AU - Zhou, Jie

AU - Wu, Honghui

AU - Wu, Yuan

AU - Song, Wenli

AU - Chen, Rong

AU - Tan, Chengwen

AU - Xie, Guoliang

AU - Cao, Di

AU - Wang, Hui

AU - Liu, Xiongjun

AU - Jiang, Suihe

AU - Wang, Xianzhen

AU - Lu, Zhaoping

PY - 2020/9

Y1 - 2020/9

N2 - Due to the lack of plastic strain accommodation and work-hardening capability, brittleness still dominates dynamic deformation in most bulk metallic glass composites (BMGCs). Herein, we present a series of Zr-based BMGCs characterized with a unique combination of fracture strain of ~15%, ultimate strength of ~1550 MPa and unusual two-stage work-hardening behavior upon dynamic loading. The strain-induced martensitic transformation occurred, not only homogenizes the dynamic plastic flow, but also compensates the amorphous work-softening. Our work highlights a novel route for developing high-performance BMGCs for high-speed applications, and sheds new insights on the deformation mechanisms of BMGCs.

AB - Due to the lack of plastic strain accommodation and work-hardening capability, brittleness still dominates dynamic deformation in most bulk metallic glass composites (BMGCs). Herein, we present a series of Zr-based BMGCs characterized with a unique combination of fracture strain of ~15%, ultimate strength of ~1550 MPa and unusual two-stage work-hardening behavior upon dynamic loading. The strain-induced martensitic transformation occurred, not only homogenizes the dynamic plastic flow, but also compensates the amorphous work-softening. Our work highlights a novel route for developing high-performance BMGCs for high-speed applications, and sheds new insights on the deformation mechanisms of BMGCs.

KW - Bulk metallic glass composite

KW - dynamic deformation behavior

KW - martensitic transformation

KW - transformation-induced plasticity

KW - work-hardening

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U2 - 10.1016/j.scriptamat.2020.05.012

DO - 10.1016/j.scriptamat.2020.05.012

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VL - 186

SP - 346

EP - 351

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Enhancing dynamic mechanical properties of bulk metallic glass composites via deformation-induced martensitic transformation

Abstract

Keywords

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