Interfacial failure behavior of PyC-Cf/AZ91D composite fabricated by LSEVI

Shaolin Li; Lehua Qi; Ting Zhang; Jiming Zhou; Hejun Li

doi:10.1016/j.jmst.2017.12.013

Interfacial failure behavior of PyC-C_f/AZ91D composite fabricated by LSEVI

Shaolin Li, Lehua Qi, Ting Zhang, Jiming Zhou, Hejun Li

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

18 Scopus citations

Abstract

Carbon fiber reinforced AZ91D matrix composites with pyrolytic (PyC) coating deposited on fiber surface (PyC-C_f/AZ91D composites) have been fabricated by Liquid-solid extrusion following vacuum pressure infiltration technique (LSEVI). Interfacial microstructure and failure behavior of the composites were investigated. Instead of interfacial reaction products, block-shaped interfacial precipitates Mg₁₇Al₁₂ were detected at the interface, which indicates that interfacial reaction was restrained by LSEVI and PyC coating. Nano-MgO was detected at the interface. Interfacial failure behavior of the PyC-C_f/AZ91D composites, which was the failure between PyC coating and AZ91D alloy due to the mismatch of thermal expansion and relatively poor bonding, was proposed. Fracture surface of the PyC-C_f/AZ91D composites was characterized by fibers pulling-out tests. PyC coating served not only as protection to the fibers, but also an adjustment of the interface of the composites.

Original language	English
Pages (from-to)	1602-1608
Number of pages	7
Journal	Journal of Materials Science and Technology
Volume	34
Issue number	9
DOIs	https://doi.org/10.1016/j.jmst.2017.12.013
State	Published - Sep 2018

Keywords

Carbon fiber
Failure
Interface
MMCs

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@article{733c20abfcdf4751b330f8dd58881508,

title = "Interfacial failure behavior of PyC-Cf/AZ91D composite fabricated by LSEVI",

abstract = "Carbon fiber reinforced AZ91D matrix composites with pyrolytic (PyC) coating deposited on fiber surface (PyC-Cf/AZ91D composites) have been fabricated by Liquid-solid extrusion following vacuum pressure infiltration technique (LSEVI). Interfacial microstructure and failure behavior of the composites were investigated. Instead of interfacial reaction products, block-shaped interfacial precipitates Mg17Al12 were detected at the interface, which indicates that interfacial reaction was restrained by LSEVI and PyC coating. Nano-MgO was detected at the interface. Interfacial failure behavior of the PyC-Cf/AZ91D composites, which was the failure between PyC coating and AZ91D alloy due to the mismatch of thermal expansion and relatively poor bonding, was proposed. Fracture surface of the PyC-Cf/AZ91D composites was characterized by fibers pulling-out tests. PyC coating served not only as protection to the fibers, but also an adjustment of the interface of the composites.",

keywords = "Carbon fiber, Failure, Interface, MMCs",

author = "Shaolin Li and Lehua Qi and Ting Zhang and Jiming Zhou and Hejun Li",

note = "Publisher Copyright: {\textcopyright} 2018",

year = "2018",

month = sep,

doi = "10.1016/j.jmst.2017.12.013",

language = "英语",

volume = "34",

pages = "1602--1608",

journal = "Journal of Materials Science and Technology",

issn = "1005-0302",

publisher = "Chinese Society of Metals",

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}

TY - JOUR

T1 - Interfacial failure behavior of PyC-Cf/AZ91D composite fabricated by LSEVI

AU - Li, Shaolin

AU - Qi, Lehua

AU - Zhang, Ting

AU - Zhou, Jiming

AU - Li, Hejun

PY - 2018/9

Y1 - 2018/9

N2 - Carbon fiber reinforced AZ91D matrix composites with pyrolytic (PyC) coating deposited on fiber surface (PyC-Cf/AZ91D composites) have been fabricated by Liquid-solid extrusion following vacuum pressure infiltration technique (LSEVI). Interfacial microstructure and failure behavior of the composites were investigated. Instead of interfacial reaction products, block-shaped interfacial precipitates Mg17Al12 were detected at the interface, which indicates that interfacial reaction was restrained by LSEVI and PyC coating. Nano-MgO was detected at the interface. Interfacial failure behavior of the PyC-Cf/AZ91D composites, which was the failure between PyC coating and AZ91D alloy due to the mismatch of thermal expansion and relatively poor bonding, was proposed. Fracture surface of the PyC-Cf/AZ91D composites was characterized by fibers pulling-out tests. PyC coating served not only as protection to the fibers, but also an adjustment of the interface of the composites.

AB - Carbon fiber reinforced AZ91D matrix composites with pyrolytic (PyC) coating deposited on fiber surface (PyC-Cf/AZ91D composites) have been fabricated by Liquid-solid extrusion following vacuum pressure infiltration technique (LSEVI). Interfacial microstructure and failure behavior of the composites were investigated. Instead of interfacial reaction products, block-shaped interfacial precipitates Mg17Al12 were detected at the interface, which indicates that interfacial reaction was restrained by LSEVI and PyC coating. Nano-MgO was detected at the interface. Interfacial failure behavior of the PyC-Cf/AZ91D composites, which was the failure between PyC coating and AZ91D alloy due to the mismatch of thermal expansion and relatively poor bonding, was proposed. Fracture surface of the PyC-Cf/AZ91D composites was characterized by fibers pulling-out tests. PyC coating served not only as protection to the fibers, but also an adjustment of the interface of the composites.

KW - Carbon fiber

KW - Failure

KW - Interface

KW - MMCs

UR - http://www.scopus.com/inward/record.url?scp=85039170325&partnerID=8YFLogxK

U2 - 10.1016/j.jmst.2017.12.013

DO - 10.1016/j.jmst.2017.12.013

M3 - 文章

AN - SCOPUS:85039170325

SN - 1005-0302

VL - 34

SP - 1602

EP - 1608

JO - Journal of Materials Science and Technology

JF - Journal of Materials Science and Technology

IS - 9

ER -

Interfacial failure behavior of PyC-C_f/AZ91D composite fabricated by LSEVI

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Keywords

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