Effects of Al addition on the phase transformation and interfacial evolution in multilayer Ti-B4C composite

Chao Wu; Shihui Xie; Yunkai Li; Hanqing Xu; Yiwen Chen

doi:10.1016/j.ceramint.2017.11.211

Effects of Al addition on the phase transformation and interfacial evolution in multilayer Ti-B₄C composite

Chao Wu, Shihui Xie, Yunkai Li^*, Hanqing Xu, Yiwen Chen

^*Corresponding author for this work

School of Material Science and Engineering

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

6 Citations (Scopus)

Abstract

The fully-dense multilayer Ti-B₄C composite doped with 6 wt% Al was fabricated via tape-casting and hot-pressing sintering at 1800 °C and under a uniaxial pressure of 30 MPa for 60 min. The effects of Al addition on the phase composition, interfacial microstructure and fracture toughness of the laminate composite were investigated. Based on the results of WDS and EDS, Al addition was proved to be effective on accelerating atom diffusion between Ti and B₄C due to the melting pool around interface where liquid Al enriched, besides, it helps to transform the interfacial bonding method of physical to metallurgical. Finally, the improvement on toughness of Al doped composite can be attributed to the strong metallurgical bonding and hybrid fracture mode of interface. Our study may provide a potential method for producing high strength and toughness multilayer metal/ceramic composites.

Original language	English
Pages (from-to)	4121-4125
Number of pages	5
Journal	Ceramics International
Volume	44
Issue number	4
DOIs	https://doi.org/10.1016/j.ceramint.2017.11.211
Publication status	Published - Mar 2018

Keywords

Al addition
Interfacial reaction
Laminate structure
Ti/BC composite

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10.1016/j.ceramint.2017.11.211

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title = "Effects of Al addition on the phase transformation and interfacial evolution in multilayer Ti-B4C composite",

abstract = "The fully-dense multilayer Ti-B4C composite doped with 6 wt% Al was fabricated via tape-casting and hot-pressing sintering at 1800 °C and under a uniaxial pressure of 30 MPa for 60 min. The effects of Al addition on the phase composition, interfacial microstructure and fracture toughness of the laminate composite were investigated. Based on the results of WDS and EDS, Al addition was proved to be effective on accelerating atom diffusion between Ti and B4C due to the melting pool around interface where liquid Al enriched, besides, it helps to transform the interfacial bonding method of physical to metallurgical. Finally, the improvement on toughness of Al doped composite can be attributed to the strong metallurgical bonding and hybrid fracture mode of interface. Our study may provide a potential method for producing high strength and toughness multilayer metal/ceramic composites.",

keywords = "Al addition, Interfacial reaction, Laminate structure, Ti/BC composite",

author = "Chao Wu and Shihui Xie and Yunkai Li and Hanqing Xu and Yiwen Chen",

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year = "2018",

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doi = "10.1016/j.ceramint.2017.11.211",

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T1 - Effects of Al addition on the phase transformation and interfacial evolution in multilayer Ti-B4C composite

AU - Wu, Chao

AU - Xie, Shihui

AU - Li, Yunkai

AU - Xu, Hanqing

AU - Chen, Yiwen

PY - 2018/3

Y1 - 2018/3

N2 - The fully-dense multilayer Ti-B4C composite doped with 6 wt% Al was fabricated via tape-casting and hot-pressing sintering at 1800 °C and under a uniaxial pressure of 30 MPa for 60 min. The effects of Al addition on the phase composition, interfacial microstructure and fracture toughness of the laminate composite were investigated. Based on the results of WDS and EDS, Al addition was proved to be effective on accelerating atom diffusion between Ti and B4C due to the melting pool around interface where liquid Al enriched, besides, it helps to transform the interfacial bonding method of physical to metallurgical. Finally, the improvement on toughness of Al doped composite can be attributed to the strong metallurgical bonding and hybrid fracture mode of interface. Our study may provide a potential method for producing high strength and toughness multilayer metal/ceramic composites.

AB - The fully-dense multilayer Ti-B4C composite doped with 6 wt% Al was fabricated via tape-casting and hot-pressing sintering at 1800 °C and under a uniaxial pressure of 30 MPa for 60 min. The effects of Al addition on the phase composition, interfacial microstructure and fracture toughness of the laminate composite were investigated. Based on the results of WDS and EDS, Al addition was proved to be effective on accelerating atom diffusion between Ti and B4C due to the melting pool around interface where liquid Al enriched, besides, it helps to transform the interfacial bonding method of physical to metallurgical. Finally, the improvement on toughness of Al doped composite can be attributed to the strong metallurgical bonding and hybrid fracture mode of interface. Our study may provide a potential method for producing high strength and toughness multilayer metal/ceramic composites.

KW - Al addition

KW - Interfacial reaction

KW - Laminate structure

KW - Ti/BC composite

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DO - 10.1016/j.ceramint.2017.11.211

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SN - 0272-8842

VL - 44

SP - 4121

EP - 4125

JO - Ceramics International

JF - Ceramics International

IS - 4

ER -

Effects of Al addition on the phase transformation and interfacial evolution in multilayer Ti-B₄C composite

Abstract

Keywords

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