Study on mechanical properties of NbC reinforced Nb4AlC3 composites prepared by in situ hot-pressing sintering

Bo Zhang; Jian Yang; Lei Yu; Li Mei Pan; Tai Qiu; Chun Feng Hu

Study on mechanical properties of NbC reinforced Nb₄AlC₃ composites prepared by in situ hot-pressing sintering

Bo Zhang, Jian Yang, Lei Yu, Li Mei Pan, Tai Qiu, Chun Feng Hu

College of Materials Science and Engineering

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

1 Scopus citations

Abstract

Fully dense NbC reinforced Nb₄AlC₃ composites were fabricated by reaction in situ hot-pressing sintering at 1700°C using Nb, Al, and C powders as raw materials. The phase composition and microstructure of the materials were characterized by XRD, SEM and EDS analysis. Effects of NbC content on the phases, sintering properties, microstructure, and mechanical properties of the materials were investigated. The results indicate that the in situ incorporation of NbC promotes the sintering of the materials and show significant strengthening and toughening effect. As the NbC content increasing from 0 to 15vol%, both bending strength and fracture toughness increase and then decrease. The 8vol% NbC/Nb₄AlC₃ composite shows the highest strength of 494 MPa, and toughness of 8.4 MPa·m^1/2. The Vickers hardness increases from 2.6 GPa to 4.4 GPa.

Original language	English
Pages (from-to)	1144-1148+1161
Journal	Rengong Jingti Xuebao/Journal of Synthetic Crystals
Volume	43
Issue number	5
State	Published - May 2014

Keywords

Hot pressing sintering
Mechanical property
Reaction in-situ

Cite this

@article{ddecc04fc4ea4fb09a1f10f095581452,

title = "Study on mechanical properties of NbC reinforced Nb4AlC3 composites prepared by in situ hot-pressing sintering",

abstract = "Fully dense NbC reinforced Nb4AlC3 composites were fabricated by reaction in situ hot-pressing sintering at 1700°C using Nb, Al, and C powders as raw materials. The phase composition and microstructure of the materials were characterized by XRD, SEM and EDS analysis. Effects of NbC content on the phases, sintering properties, microstructure, and mechanical properties of the materials were investigated. The results indicate that the in situ incorporation of NbC promotes the sintering of the materials and show significant strengthening and toughening effect. As the NbC content increasing from 0 to 15vol%, both bending strength and fracture toughness increase and then decrease. The 8vol% NbC/Nb4AlC3 composite shows the highest strength of 494 MPa, and toughness of 8.4 MPa·m1/2. The Vickers hardness increases from 2.6 GPa to 4.4 GPa.",

keywords = "Hot pressing sintering, Mechanical property, Reaction in-situ",

author = "Bo Zhang and Jian Yang and Lei Yu and Pan, {Li Mei} and Tai Qiu and Hu, {Chun Feng}",

year = "2014",

month = may,

language = "英语",

volume = "43",

pages = "1144--1148+1161",

journal = "Rengong Jingti Xuebao/Journal of Synthetic Crystals",

issn = "1000-985X",

publisher = "Chinese Ceramic Society",

number = "5",

}

TY - JOUR

T1 - Study on mechanical properties of NbC reinforced Nb4AlC3 composites prepared by in situ hot-pressing sintering

AU - Zhang, Bo

AU - Yang, Jian

AU - Yu, Lei

AU - Pan, Li Mei

AU - Qiu, Tai

AU - Hu, Chun Feng

PY - 2014/5

Y1 - 2014/5

N2 - Fully dense NbC reinforced Nb4AlC3 composites were fabricated by reaction in situ hot-pressing sintering at 1700°C using Nb, Al, and C powders as raw materials. The phase composition and microstructure of the materials were characterized by XRD, SEM and EDS analysis. Effects of NbC content on the phases, sintering properties, microstructure, and mechanical properties of the materials were investigated. The results indicate that the in situ incorporation of NbC promotes the sintering of the materials and show significant strengthening and toughening effect. As the NbC content increasing from 0 to 15vol%, both bending strength and fracture toughness increase and then decrease. The 8vol% NbC/Nb4AlC3 composite shows the highest strength of 494 MPa, and toughness of 8.4 MPa·m1/2. The Vickers hardness increases from 2.6 GPa to 4.4 GPa.

AB - Fully dense NbC reinforced Nb4AlC3 composites were fabricated by reaction in situ hot-pressing sintering at 1700°C using Nb, Al, and C powders as raw materials. The phase composition and microstructure of the materials were characterized by XRD, SEM and EDS analysis. Effects of NbC content on the phases, sintering properties, microstructure, and mechanical properties of the materials were investigated. The results indicate that the in situ incorporation of NbC promotes the sintering of the materials and show significant strengthening and toughening effect. As the NbC content increasing from 0 to 15vol%, both bending strength and fracture toughness increase and then decrease. The 8vol% NbC/Nb4AlC3 composite shows the highest strength of 494 MPa, and toughness of 8.4 MPa·m1/2. The Vickers hardness increases from 2.6 GPa to 4.4 GPa.

KW - Hot pressing sintering

KW - Mechanical property

KW - Reaction in-situ

UR - http://www.scopus.com/inward/record.url?scp=84902597615&partnerID=8YFLogxK

M3 - 文章

AN - SCOPUS:84902597615

SN - 1000-985X

VL - 43

SP - 1144-1148+1161

JO - Rengong Jingti Xuebao/Journal of Synthetic Crystals

JF - Rengong Jingti Xuebao/Journal of Synthetic Crystals

IS - 5

ER -

Study on mechanical properties of NbC reinforced Nb₄AlC₃ composites prepared by in situ hot-pressing sintering

Abstract

Keywords

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