Microstructure and high temperature mechanical properties of hot-pressed ZrB2-based composites

Y. Wang; J. Liang; F. Y. Yang; X. H. Zhang

Microstructure and high temperature mechanical properties of hot-pressed ZrB₂-based composites

Y. Wang^*, J. Liang, F. Y. Yang, X. H. Zhang

^*Corresponding author for this work

Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Two different ultra-high-temperature ZrB₂-based composites, ZS (ZrB₂+20 SiC) and ZSC (ZrB₂+20 SiC+20 C_f), were prepared from commercial powders by hot pressing at 2000°C and 30MPa. The fracture surfaces of both materials at 300, 600 and 900°C showed a mixed mechanism of inter- and intra-granular fracture. The incorporated C fibers in ZS composites effectively improved fracture toughness, from about 4.25MPa.m ^1/2 for ZS to 6.56MPa.m^1/2 for ZSC, and decreased the descending slop of flexural strength with the increasing of temperature, although 3-pt. flexural strength reduced, from up to 508 and 410MPa for ZS to 355 and 310MPa for0 ZSC at 300 and 900°C, respectively.

Original language	English
Title of host publication	Advances in Heterogeneous Material Mechanics 2008 - 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008
Pages	407-410
Number of pages	4
Publication status	Published - 2008
Externally published	Yes
Event	Advances in Heterogeneous Material Mechanics 2008 - 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008 - Huangshan, China Duration: 3 Jun 2008 → 8 Jun 2008

Publication series

Name	Advances in Heterogeneous Material Mechanics 2008 - Proceedings of the 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008

Conference

Conference	Advances in Heterogeneous Material Mechanics 2008 - 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008
Country/Territory	China
City	Huangshan
Period	3/06/08 → 8/06/08

Keywords

Fracture
Mechanical properties
Microstructure
SiC
ZrB

Cite this

Wang, Y., Liang, J., Yang, F. Y., & Zhang, X. H. (2008). Microstructure and high temperature mechanical properties of hot-pressed ZrB₂-based composites. In Advances in Heterogeneous Material Mechanics 2008 - 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008 (pp. 407-410). (Advances in Heterogeneous Material Mechanics 2008 - Proceedings of the 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008).

Wang, Y. ; Liang, J. ; Yang, F. Y. et al. / Microstructure and high temperature mechanical properties of hot-pressed ZrB₂-based composites. Advances in Heterogeneous Material Mechanics 2008 - 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008. 2008. pp. 407-410 (Advances in Heterogeneous Material Mechanics 2008 - Proceedings of the 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008).

@inproceedings{0e6c4be93646489e9b61754ffa03759c,

title = "Microstructure and high temperature mechanical properties of hot-pressed ZrB2-based composites",

abstract = "Two different ultra-high-temperature ZrB2-based composites, ZS (ZrB2+20 SiC) and ZSC (ZrB2+20 SiC+20 Cf), were prepared from commercial powders by hot pressing at 2000°C and 30MPa. The fracture surfaces of both materials at 300, 600 and 900°C showed a mixed mechanism of inter- and intra-granular fracture. The incorporated C fibers in ZS composites effectively improved fracture toughness, from about 4.25MPa.m 1/2 for ZS to 6.56MPa.m1/2 for ZSC, and decreased the descending slop of flexural strength with the increasing of temperature, although 3-pt. flexural strength reduced, from up to 508 and 410MPa for ZS to 355 and 310MPa for0 ZSC at 300 and 900°C, respectively.",

keywords = "Fracture, Mechanical properties, Microstructure, SiC, ZrB",

author = "Y. Wang and J. Liang and Yang, {F. Y.} and Zhang, {X. H.}",

year = "2008",

language = "English",

isbn = "9781932078800",

series = "Advances in Heterogeneous Material Mechanics 2008 - Proceedings of the 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008",

pages = "407--410",

booktitle = "Advances in Heterogeneous Material Mechanics 2008 - 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008",

note = "Advances in Heterogeneous Material Mechanics 2008 - 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008 ; Conference date: 03-06-2008 Through 08-06-2008",

}

Wang, Y, Liang, J, Yang, FY & Zhang, XH 2008, Microstructure and high temperature mechanical properties of hot-pressed ZrB₂-based composites. in Advances in Heterogeneous Material Mechanics 2008 - 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008. Advances in Heterogeneous Material Mechanics 2008 - Proceedings of the 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008, pp. 407-410, Advances in Heterogeneous Material Mechanics 2008 - 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008, Huangshan, China, 3/06/08.

Microstructure and high temperature mechanical properties of hot-pressed ZrB₂-based composites. / Wang, Y.; Liang, J.; Yang, F. Y. et al.
Advances in Heterogeneous Material Mechanics 2008 - 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008. 2008. p. 407-410 (Advances in Heterogeneous Material Mechanics 2008 - Proceedings of the 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Microstructure and high temperature mechanical properties of hot-pressed ZrB2-based composites

AU - Wang, Y.

AU - Liang, J.

AU - Yang, F. Y.

AU - Zhang, X. H.

PY - 2008

Y1 - 2008

N2 - Two different ultra-high-temperature ZrB2-based composites, ZS (ZrB2+20 SiC) and ZSC (ZrB2+20 SiC+20 Cf), were prepared from commercial powders by hot pressing at 2000°C and 30MPa. The fracture surfaces of both materials at 300, 600 and 900°C showed a mixed mechanism of inter- and intra-granular fracture. The incorporated C fibers in ZS composites effectively improved fracture toughness, from about 4.25MPa.m 1/2 for ZS to 6.56MPa.m1/2 for ZSC, and decreased the descending slop of flexural strength with the increasing of temperature, although 3-pt. flexural strength reduced, from up to 508 and 410MPa for ZS to 355 and 310MPa for0 ZSC at 300 and 900°C, respectively.

AB - Two different ultra-high-temperature ZrB2-based composites, ZS (ZrB2+20 SiC) and ZSC (ZrB2+20 SiC+20 Cf), were prepared from commercial powders by hot pressing at 2000°C and 30MPa. The fracture surfaces of both materials at 300, 600 and 900°C showed a mixed mechanism of inter- and intra-granular fracture. The incorporated C fibers in ZS composites effectively improved fracture toughness, from about 4.25MPa.m 1/2 for ZS to 6.56MPa.m1/2 for ZSC, and decreased the descending slop of flexural strength with the increasing of temperature, although 3-pt. flexural strength reduced, from up to 508 and 410MPa for ZS to 355 and 310MPa for0 ZSC at 300 and 900°C, respectively.

KW - Fracture

KW - Mechanical properties

KW - Microstructure

KW - SiC

KW - ZrB

UR - http://www.scopus.com/inward/record.url?scp=56649089739&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:56649089739

SN - 9781932078800

T3 - Advances in Heterogeneous Material Mechanics 2008 - Proceedings of the 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008

SP - 407

EP - 410

BT - Advances in Heterogeneous Material Mechanics 2008 - 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008

T2 - Advances in Heterogeneous Material Mechanics 2008 - 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008

Y2 - 3 June 2008 through 8 June 2008

ER -

Wang Y, Liang J, Yang FY, Zhang XH. Microstructure and high temperature mechanical properties of hot-pressed ZrB₂-based composites. In Advances in Heterogeneous Material Mechanics 2008 - 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008. 2008. p. 407-410. (Advances in Heterogeneous Material Mechanics 2008 - Proceedings of the 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008).