Bioinspired tough and strong ZrB2-SiCw/Ti–Nb–Ti hybrid composites with a hierarchical ceramic-metal architecture

Yuhang Bai; Mengyong Sun; Laifei Cheng; Shangwu Fan

doi:10.1016/j.jallcom.2019.151993

Bioinspired tough and strong ZrB₂-SiC_w/Ti–Nb–Ti hybrid composites with a hierarchical ceramic-metal architecture

Yuhang Bai, Mengyong Sun, Laifei Cheng, Shangwu Fan

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

13 Scopus citations

Abstract

Triple-layered Ti–Nb–Ti foils were introduced into ZrB₂-based ceramics to form heterogeneous ceramic–metal layered composites. Following spark plasma sintering and mechanical processing, the fracture toughness of laminated ZrB₂-SiC_w/Ti–Nb–Ti ceramics (15.18 MPa m^1/2) was significantly improved in comparasion to monolithic ZrB₂-SiC_w ceramics (7.33 MPa m^1/2). In situ formation of TiB₂ and (Ti, Nb)C whiskers alleviated interfacial residual stress and improved interfacial bonding strength. Plastic deformation (such as slip, dimple, and tear-ridge) arising from the existence of a ductile Ti–Nb solid solution ((Ti, Nb)_ss), Ti, and Nb was observed in the fracture surface of the interlayer, leading to the improvement of toughness. Moreover, an increase in R-curve behavior indicated a lower sensitivity to cracks in ceramics with metallic interlayers compared to monolithic ceramics.

Original language	English
Article number	151993
Journal	Journal of Alloys and Compounds
Volume	811
DOIs	https://doi.org/10.1016/j.jallcom.2019.151993
State	Published - 30 Nov 2019

Keywords

Damage tolerance
In situ toughening
Metallic interlayer
Zirconium diboride

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title = "Bioinspired tough and strong ZrB2-SiCw/Ti–Nb–Ti hybrid composites with a hierarchical ceramic-metal architecture",

abstract = "Triple-layered Ti–Nb–Ti foils were introduced into ZrB2-based ceramics to form heterogeneous ceramic–metal layered composites. Following spark plasma sintering and mechanical processing, the fracture toughness of laminated ZrB2-SiCw/Ti–Nb–Ti ceramics (15.18 MPa m1/2) was significantly improved in comparasion to monolithic ZrB2-SiCw ceramics (7.33 MPa m1/2). In situ formation of TiB2 and (Ti, Nb)C whiskers alleviated interfacial residual stress and improved interfacial bonding strength. Plastic deformation (such as slip, dimple, and tear-ridge) arising from the existence of a ductile Ti–Nb solid solution ((Ti, Nb)ss), Ti, and Nb was observed in the fracture surface of the interlayer, leading to the improvement of toughness. Moreover, an increase in R-curve behavior indicated a lower sensitivity to cracks in ceramics with metallic interlayers compared to monolithic ceramics.",

keywords = "Damage tolerance, In situ toughening, Metallic interlayer, Zirconium diboride",

author = "Yuhang Bai and Mengyong Sun and Laifei Cheng and Shangwu Fan",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

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day = "30",

doi = "10.1016/j.jallcom.2019.151993",

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AU - Bai, Yuhang

AU - Sun, Mengyong

AU - Cheng, Laifei

AU - Fan, Shangwu

PY - 2019/11/30

Y1 - 2019/11/30

N2 - Triple-layered Ti–Nb–Ti foils were introduced into ZrB2-based ceramics to form heterogeneous ceramic–metal layered composites. Following spark plasma sintering and mechanical processing, the fracture toughness of laminated ZrB2-SiCw/Ti–Nb–Ti ceramics (15.18 MPa m1/2) was significantly improved in comparasion to monolithic ZrB2-SiCw ceramics (7.33 MPa m1/2). In situ formation of TiB2 and (Ti, Nb)C whiskers alleviated interfacial residual stress and improved interfacial bonding strength. Plastic deformation (such as slip, dimple, and tear-ridge) arising from the existence of a ductile Ti–Nb solid solution ((Ti, Nb)ss), Ti, and Nb was observed in the fracture surface of the interlayer, leading to the improvement of toughness. Moreover, an increase in R-curve behavior indicated a lower sensitivity to cracks in ceramics with metallic interlayers compared to monolithic ceramics.

AB - Triple-layered Ti–Nb–Ti foils were introduced into ZrB2-based ceramics to form heterogeneous ceramic–metal layered composites. Following spark plasma sintering and mechanical processing, the fracture toughness of laminated ZrB2-SiCw/Ti–Nb–Ti ceramics (15.18 MPa m1/2) was significantly improved in comparasion to monolithic ZrB2-SiCw ceramics (7.33 MPa m1/2). In situ formation of TiB2 and (Ti, Nb)C whiskers alleviated interfacial residual stress and improved interfacial bonding strength. Plastic deformation (such as slip, dimple, and tear-ridge) arising from the existence of a ductile Ti–Nb solid solution ((Ti, Nb)ss), Ti, and Nb was observed in the fracture surface of the interlayer, leading to the improvement of toughness. Moreover, an increase in R-curve behavior indicated a lower sensitivity to cracks in ceramics with metallic interlayers compared to monolithic ceramics.

KW - Damage tolerance

KW - In situ toughening

KW - Metallic interlayer

KW - Zirconium diboride

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DO - 10.1016/j.jallcom.2019.151993

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AN - SCOPUS:85071482774

SN - 0925-8388

VL - 811

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

M1 - 151993

ER -

Bioinspired tough and strong ZrB₂-SiC_w/Ti–Nb–Ti hybrid composites with a hierarchical ceramic-metal architecture

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Keywords

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