Damage tolerance and R-curve behavior of ZrB2-ZrO2 composites

Tao Zhu; Weijie Li; Xinghong Zhang; Ping Hu; Changqing Hong; Ling Weng

doi:10.1016/j.msea.2009.03.023

Damage tolerance and R-curve behavior of ZrB₂-ZrO₂ composites

Tao Zhu
, Weijie Li^*
, Xinghong Zhang
, Ping Hu
, Changqing Hong
, Ling Weng

^*Corresponding author for this work

School of Astronautics

Harbin Institute of Technology
Harbin University of Science and Technology

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

17 Scopus citations

Abstract

Four ZrB₂ composites were prepared by hot-pressing with different content of ZrO₂, i.e., 0, 10, 20 and 30 vol%. By means of the indentation-strength method, damage tolerance and resistance-curve (R-curve) behavior were investigated for ZrB₂-ZrO₂ composites. Under the indentation load of 196 N, retained strength of monolithic ZrB₂ was only ∼89 MPa, however, that value could reach ∼281 MPa for ZrB₂-30 vol%ZrO₂ composite. Obvious R-curve behavior was further found in ZrB₂-ZrO₂ composites compared with monolithic ZrB₂. Regarding ZrB₂-30 vol%ZrO₂, the steady-state toughness was ∼6.5 MPa m^1/2. Such improved toughening effect was attributed to the crack bridging and transformation toughening of ZrO₂.

Original language	English
Pages (from-to)	297-301
Number of pages	5
Journal	Materials Science and Engineering: A
Volume	516
Issue number	1-2
DOIs	https://doi.org/10.1016/j.msea.2009.03.023
State	Published - 15 Aug 2009

Keywords

Crack bridging
Damage tolerance
Phase transformation
R-curve behavior
ZrB-ZrO composites

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10.1016/j.msea.2009.03.023

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@article{b3a9f9f757d44ceb8352e481abce6c1d,

title = "Damage tolerance and R-curve behavior of ZrB2-ZrO2 composites",

abstract = "Four ZrB2 composites were prepared by hot-pressing with different content of ZrO2, i.e., 0, 10, 20 and 30 vol\%. By means of the indentation-strength method, damage tolerance and resistance-curve (R-curve) behavior were investigated for ZrB2-ZrO2 composites. Under the indentation load of 196 N, retained strength of monolithic ZrB2 was only ∼89 MPa, however, that value could reach ∼281 MPa for ZrB2-30 vol\%ZrO2 composite. Obvious R-curve behavior was further found in ZrB2-ZrO2 composites compared with monolithic ZrB2. Regarding ZrB2-30 vol\%ZrO2, the steady-state toughness was ∼6.5 MPa m1/2. Such improved toughening effect was attributed to the crack bridging and transformation toughening of ZrO2.",

keywords = "Crack bridging, Damage tolerance, Phase transformation, R-curve behavior, ZrB-ZrO composites",

author = "Tao Zhu and Weijie Li and Xinghong Zhang and Ping Hu and Changqing Hong and Ling Weng",

year = "2009",

month = aug,

day = "15",

doi = "10.1016/j.msea.2009.03.023",

language = "英语",

volume = "516",

pages = "297--301",

journal = "Materials Science and Engineering: A",

issn = "0921-5093",

publisher = "Elsevier Ltd",

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}

TY - JOUR

T1 - Damage tolerance and R-curve behavior of ZrB2-ZrO2 composites

AU - Zhu, Tao

AU - Li, Weijie

AU - Zhang, Xinghong

AU - Hu, Ping

AU - Hong, Changqing

AU - Weng, Ling

PY - 2009/8/15

Y1 - 2009/8/15

N2 - Four ZrB2 composites were prepared by hot-pressing with different content of ZrO2, i.e., 0, 10, 20 and 30 vol%. By means of the indentation-strength method, damage tolerance and resistance-curve (R-curve) behavior were investigated for ZrB2-ZrO2 composites. Under the indentation load of 196 N, retained strength of monolithic ZrB2 was only ∼89 MPa, however, that value could reach ∼281 MPa for ZrB2-30 vol%ZrO2 composite. Obvious R-curve behavior was further found in ZrB2-ZrO2 composites compared with monolithic ZrB2. Regarding ZrB2-30 vol%ZrO2, the steady-state toughness was ∼6.5 MPa m1/2. Such improved toughening effect was attributed to the crack bridging and transformation toughening of ZrO2.

AB - Four ZrB2 composites were prepared by hot-pressing with different content of ZrO2, i.e., 0, 10, 20 and 30 vol%. By means of the indentation-strength method, damage tolerance and resistance-curve (R-curve) behavior were investigated for ZrB2-ZrO2 composites. Under the indentation load of 196 N, retained strength of monolithic ZrB2 was only ∼89 MPa, however, that value could reach ∼281 MPa for ZrB2-30 vol%ZrO2 composite. Obvious R-curve behavior was further found in ZrB2-ZrO2 composites compared with monolithic ZrB2. Regarding ZrB2-30 vol%ZrO2, the steady-state toughness was ∼6.5 MPa m1/2. Such improved toughening effect was attributed to the crack bridging and transformation toughening of ZrO2.

KW - Crack bridging

KW - Damage tolerance

KW - Phase transformation

KW - R-curve behavior

KW - ZrB-ZrO composites

UR - https://www.scopus.com/pages/publications/67649777081

U2 - 10.1016/j.msea.2009.03.023

DO - 10.1016/j.msea.2009.03.023

M3 - 文章

AN - SCOPUS:67649777081

SN - 0921-5093

VL - 516

SP - 297

EP - 301

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 1-2

ER -

Damage tolerance and R-curve behavior of ZrB₂-ZrO₂ composites

Abstract

Keywords

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