Microstructure and creep behavior of a Y-α-β sialon composite

Ming Tong Lin; Dan Yu Jiang; Lin Wang; Mei Ling Ruan; Jian Lin Shi

Microstructure and creep behavior of a Y-α-β sialon composite

Ming Tong Lin^*
, Dan Yu Jiang
, Lin Wang
, Mei Ling Ruan
, Jian Lin Shi

^*Corresponding author for this work

CAS - Shanghai Institute of Ceramics

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

Abstract

Four-point bending creep behaviour of a Y-α-β sialon composite with YAG as the intergranular phase and with the theoretical α/β ratio of 65/35 was studied at temperature 1250-1350°C and stresses of 110-290 MPa in air. The stress exponents at 1250, 1300 and 1350°C were found to be 1.31, 1.49 and 1.62, respectively, and creep activation energy was 677 kJ·mol^-1. Cavities were found mainly on multi grain junctions. Grain boundary diffusion coupled with sliding was identified to be the dominant creep deformation mechanism. The creep rate exponent, p, in Monkman-Grant relation was 1.6, and the nucleation/growth, coalescence and linkage of multi-grain-junction cavities were responsible for the creep rupture.

Original language	English
Pages (from-to)	1113-1120
Number of pages	8
Journal	Wuji Cailiao Xuebao/Journal of Inorganic Materials
Volume	16
Issue number	6
State	Published - Nov 2001
Externally published	Yes

Keywords

Creep
Microstructure
Oxidation
Phase transformation
Sialon composite

Cite this

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title = "Microstructure and creep behavior of a Y-α-β sialon composite",

abstract = "Four-point bending creep behaviour of a Y-α-β sialon composite with YAG as the intergranular phase and with the theoretical α/β ratio of 65/35 was studied at temperature 1250-1350°C and stresses of 110-290 MPa in air. The stress exponents at 1250, 1300 and 1350°C were found to be 1.31, 1.49 and 1.62, respectively, and creep activation energy was 677 kJ·mol-1. Cavities were found mainly on multi grain junctions. Grain boundary diffusion coupled with sliding was identified to be the dominant creep deformation mechanism. The creep rate exponent, p, in Monkman-Grant relation was 1.6, and the nucleation/growth, coalescence and linkage of multi-grain-junction cavities were responsible for the creep rupture.",

keywords = "Creep, Microstructure, Oxidation, Phase transformation, Sialon composite",

author = "Lin, \{Ming Tong\} and Jiang, \{Dan Yu\} and Lin Wang and Ruan, \{Mei Ling\} and Shi, \{Jian Lin\}",

year = "2001",

month = nov,

language = "英语",

volume = "16",

pages = "1113--1120",

journal = "Wuji Cailiao Xuebao/Journal of Inorganic Materials",

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number = "6",

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TY - JOUR

T1 - Microstructure and creep behavior of a Y-α-β sialon composite

AU - Lin, Ming Tong

AU - Jiang, Dan Yu

AU - Wang, Lin

AU - Ruan, Mei Ling

AU - Shi, Jian Lin

PY - 2001/11

Y1 - 2001/11

N2 - Four-point bending creep behaviour of a Y-α-β sialon composite with YAG as the intergranular phase and with the theoretical α/β ratio of 65/35 was studied at temperature 1250-1350°C and stresses of 110-290 MPa in air. The stress exponents at 1250, 1300 and 1350°C were found to be 1.31, 1.49 and 1.62, respectively, and creep activation energy was 677 kJ·mol-1. Cavities were found mainly on multi grain junctions. Grain boundary diffusion coupled with sliding was identified to be the dominant creep deformation mechanism. The creep rate exponent, p, in Monkman-Grant relation was 1.6, and the nucleation/growth, coalescence and linkage of multi-grain-junction cavities were responsible for the creep rupture.

AB - Four-point bending creep behaviour of a Y-α-β sialon composite with YAG as the intergranular phase and with the theoretical α/β ratio of 65/35 was studied at temperature 1250-1350°C and stresses of 110-290 MPa in air. The stress exponents at 1250, 1300 and 1350°C were found to be 1.31, 1.49 and 1.62, respectively, and creep activation energy was 677 kJ·mol-1. Cavities were found mainly on multi grain junctions. Grain boundary diffusion coupled with sliding was identified to be the dominant creep deformation mechanism. The creep rate exponent, p, in Monkman-Grant relation was 1.6, and the nucleation/growth, coalescence and linkage of multi-grain-junction cavities were responsible for the creep rupture.

KW - Creep

KW - Microstructure

KW - Oxidation

KW - Phase transformation

KW - Sialon composite

UR - https://www.scopus.com/pages/publications/0035502706

M3 - 文章

AN - SCOPUS:0035502706

SN - 1000-324X

VL - 16

SP - 1113

EP - 1120

JO - Wuji Cailiao Xuebao/Journal of Inorganic Materials

JF - Wuji Cailiao Xuebao/Journal of Inorganic Materials

IS - 6

ER -

Microstructure and creep behavior of a Y-α-β sialon composite

Abstract

Keywords

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