A new microcosmic coordinated deformation model of Ti-based bulk metallic composites during tensile deformation

Liyuan Li; Jinshan Li; Yixuan He; Minjie Lai; Mingxiang Zhu; William Yi Wang; Hongchao Kou; Jun Wang

doi:10.1016/j.scriptamat.2019.06.039

A new microcosmic coordinated deformation model of Ti-based bulk metallic composites during tensile deformation

Liyuan Li, Jinshan Li, Yixuan He, Minjie Lai, Mingxiang Zhu, William Yi Wang, Hongchao Kou, Jun Wang

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

7 Scopus citations

Abstract

In this paper, a new coordinated deformation mode of ‘pull apart’ has been evidenced by analyzing a series of microscopic deformation steps of Ti₄₈Zr₂₀Nb₁₂Cu₅Be₁₅ metallic glass composite after tensile fracture. Different from the two previously found deformation modes of ‘tensile’ and ‘shear’, this mode is characterized by the irregular but completely fitted deformation steps between the two dendritic fragments which are separated by the tortuous matrix. This model describes the coordinated deformation behavior of dendrites and matrix in the microscopic plastic flow process and can be used to interpret the good balance of strength and ductility of metallic glass composites.

Original language	English
Pages (from-to)	23-27
Number of pages	5
Journal	Scripta Materialia
Volume	172
DOIs	https://doi.org/10.1016/j.scriptamat.2019.06.039
State	Published - Nov 2019

Keywords

Bulk metallic glass (BMG)
Composite
Deformation micromechanism
Nanostructure
Plastic deformation

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10.1016/j.scriptamat.2019.06.039

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title = "A new microcosmic coordinated deformation model of Ti-based bulk metallic composites during tensile deformation",

abstract = "In this paper, a new coordinated deformation mode of {\textquoteleft}pull apart{\textquoteright} has been evidenced by analyzing a series of microscopic deformation steps of Ti48Zr20Nb12Cu5Be15 metallic glass composite after tensile fracture. Different from the two previously found deformation modes of {\textquoteleft}tensile{\textquoteright} and {\textquoteleft}shear{\textquoteright}, this mode is characterized by the irregular but completely fitted deformation steps between the two dendritic fragments which are separated by the tortuous matrix. This model describes the coordinated deformation behavior of dendrites and matrix in the microscopic plastic flow process and can be used to interpret the good balance of strength and ductility of metallic glass composites.",

keywords = "Bulk metallic glass (BMG), Composite, Deformation micromechanism, Nanostructure, Plastic deformation",

author = "Liyuan Li and Jinshan Li and Yixuan He and Minjie Lai and Mingxiang Zhu and Wang, {William Yi} and Hongchao Kou and Jun Wang",

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year = "2019",

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doi = "10.1016/j.scriptamat.2019.06.039",

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T1 - A new microcosmic coordinated deformation model of Ti-based bulk metallic composites during tensile deformation

AU - Li, Liyuan

AU - Li, Jinshan

AU - He, Yixuan

AU - Lai, Minjie

AU - Zhu, Mingxiang

AU - Wang, William Yi

AU - Kou, Hongchao

AU - Wang, Jun

PY - 2019/11

Y1 - 2019/11

N2 - In this paper, a new coordinated deformation mode of ‘pull apart’ has been evidenced by analyzing a series of microscopic deformation steps of Ti48Zr20Nb12Cu5Be15 metallic glass composite after tensile fracture. Different from the two previously found deformation modes of ‘tensile’ and ‘shear’, this mode is characterized by the irregular but completely fitted deformation steps between the two dendritic fragments which are separated by the tortuous matrix. This model describes the coordinated deformation behavior of dendrites and matrix in the microscopic plastic flow process and can be used to interpret the good balance of strength and ductility of metallic glass composites.

AB - In this paper, a new coordinated deformation mode of ‘pull apart’ has been evidenced by analyzing a series of microscopic deformation steps of Ti48Zr20Nb12Cu5Be15 metallic glass composite after tensile fracture. Different from the two previously found deformation modes of ‘tensile’ and ‘shear’, this mode is characterized by the irregular but completely fitted deformation steps between the two dendritic fragments which are separated by the tortuous matrix. This model describes the coordinated deformation behavior of dendrites and matrix in the microscopic plastic flow process and can be used to interpret the good balance of strength and ductility of metallic glass composites.

KW - Bulk metallic glass (BMG)

KW - Composite

KW - Deformation micromechanism

KW - Nanostructure

KW - Plastic deformation

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DO - 10.1016/j.scriptamat.2019.06.039

M3 - 文章

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VL - 172

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JO - Scripta Materialia

JF - Scripta Materialia

ER -

A new microcosmic coordinated deformation model of Ti-based bulk metallic composites during tensile deformation

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