Fracture toughness of SIC, Si3N4, and sialon ceramics using controlled surface flaws

S.G. Cook; J.E. King; J.A. Little

doi:10.1179/mst.1996.12.4.366

Fracture toughness of SIC, Si₃N₄, and sialon ceramics using controlled surface flaws

S.G. Cook
, J.E. King
, J.A. Little

Aston University

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

3 Citations (Scopus)

Abstract

Knoop and Vickers indentation cracks have frequently been used as model 'precracks' in ceramic bend specimens for fracture toughness (K_1c) determination. Indentation residual stress reduces the measured K_1c but can be removed or accounted for by grinding, annealing, or modelling. Values of K_1c are obtained for four materials using Vickers indentations and an improved stress intensity factor. Methods for residual stress removal or incorporation are compared, and the most reliable stress removal alternative is identified for each material. © 1996 The Institute of Materials.

Original language	English
Pages (from-to)	366-370
Number of pages	5
Journal	Materials Science and Technology
Volume	12
Issue number	4
DOIs	https://doi.org/10.1179/mst.1996.12.4.366
Publication status	Published - Apr 1996

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10.1179/mst.1996.12.4.366

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title = "Fracture toughness of SIC, Si3N4, and sialon ceramics using controlled surface flaws",

abstract = "Knoop and Vickers indentation cracks have frequently been used as model 'precracks' in ceramic bend specimens for fracture toughness (K1c) determination. Indentation residual stress reduces the measured K1c but can be removed or accounted for by grinding, annealing, or modelling. Values of K1c are obtained for four materials using Vickers indentations and an improved stress intensity factor. Methods for residual stress removal or incorporation are compared, and the most reliable stress removal alternative is identified for each material. {\textcopyright} 1996 The Institute of Materials.",

author = "S.G. Cook and J.E. King and J.A. Little",

year = "1996",

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journal = "Materials Science and Technology",

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T1 - Fracture toughness of SIC, Si3N4, and sialon ceramics using controlled surface flaws

AU - Cook, S.G.

AU - King, J.E.

AU - Little, J.A.

PY - 1996/4

Y1 - 1996/4

N2 - Knoop and Vickers indentation cracks have frequently been used as model 'precracks' in ceramic bend specimens for fracture toughness (K1c) determination. Indentation residual stress reduces the measured K1c but can be removed or accounted for by grinding, annealing, or modelling. Values of K1c are obtained for four materials using Vickers indentations and an improved stress intensity factor. Methods for residual stress removal or incorporation are compared, and the most reliable stress removal alternative is identified for each material. © 1996 The Institute of Materials.

AB - Knoop and Vickers indentation cracks have frequently been used as model 'precracks' in ceramic bend specimens for fracture toughness (K1c) determination. Indentation residual stress reduces the measured K1c but can be removed or accounted for by grinding, annealing, or modelling. Values of K1c are obtained for four materials using Vickers indentations and an improved stress intensity factor. Methods for residual stress removal or incorporation are compared, and the most reliable stress removal alternative is identified for each material. © 1996 The Institute of Materials.

UR - https://www.scopus.com/pages/publications/0141913699

UR - https://www.tandfonline.com/doi/abs/10.1179/mst.1996.12.4.366

U2 - 10.1179/mst.1996.12.4.366

DO - 10.1179/mst.1996.12.4.366

M3 - Article

SN - 0267-0836

VL - 12

SP - 366

EP - 370

JO - Materials Science and Technology

JF - Materials Science and Technology

IS - 4

ER -

Fracture toughness of SIC, Si₃N₄, and sialon ceramics using controlled surface flaws

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