Surface and subsurface Vickers indentation cracks in SiC, Si3N4, and sialon ceramics

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

doi:10.1179/mst.1995.11.11.1093

Surface and subsurface Vickers indentation cracks in SiC, Si₃N₄, and sialon ceramics

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

Aston University

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

Abstract

The nature of subsurface cracks formed under and around Vickers hardness indentations is often assumed rather than identified. Subsurface cracks in four engineering ceramics are revealed using a penetrant technique, and flaw dimensions are recorded. The resulting data are used to investigate several aspects of indentation cracking, such as crack shape, functional relationships between indentation load and flaw dimensions, and the performance of indentation fracture toughness equations. An R curve is constructed for each of the materials. © 1995 The Institute of Materials.

Original language	English
Pages (from-to)	1093-1098
Number of pages	6
Journal	Materials Science and Technology
Volume	11
Issue number	11
DOIs	https://doi.org/10.1179/mst.1995.11.11.1093
Publication status	Published - Nov 1995

Keywords

crack shape
engineering ceramic
functional relationship
indentation fracture toughness
indentation load
R-curves
sialon ceramics
subsurface cracks
Vickers hardness indentation
Vickers indentation cracks
ceramic materials
cracks
fracture toughness
silicon carbide
Vickers hardness
indentation

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10.1179/mst.1995.11.11.1093

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title = "Surface and subsurface Vickers indentation cracks in SiC, Si3N4, and sialon ceramics",

abstract = "The nature of subsurface cracks formed under and around Vickers hardness indentations is often assumed rather than identified. Subsurface cracks in four engineering ceramics are revealed using a penetrant technique, and flaw dimensions are recorded. The resulting data are used to investigate several aspects of indentation cracking, such as crack shape, functional relationships between indentation load and flaw dimensions, and the performance of indentation fracture toughness equations. An R curve is constructed for each of the materials. {\textcopyright} 1995 The Institute of Materials.",

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year = "1995",

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doi = "10.1179/mst.1995.11.11.1093",

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AU - Cook, S.G.

AU - King, J.E.

AU - Little, J.A.

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N2 - The nature of subsurface cracks formed under and around Vickers hardness indentations is often assumed rather than identified. Subsurface cracks in four engineering ceramics are revealed using a penetrant technique, and flaw dimensions are recorded. The resulting data are used to investigate several aspects of indentation cracking, such as crack shape, functional relationships between indentation load and flaw dimensions, and the performance of indentation fracture toughness equations. An R curve is constructed for each of the materials. © 1995 The Institute of Materials.

AB - The nature of subsurface cracks formed under and around Vickers hardness indentations is often assumed rather than identified. Subsurface cracks in four engineering ceramics are revealed using a penetrant technique, and flaw dimensions are recorded. The resulting data are used to investigate several aspects of indentation cracking, such as crack shape, functional relationships between indentation load and flaw dimensions, and the performance of indentation fracture toughness equations. An R curve is constructed for each of the materials. © 1995 The Institute of Materials.

KW - crack shape

KW - engineering ceramic

KW - functional relationship

KW - indentation fracture toughness

KW - indentation load

KW - R-curves

KW - sialon ceramics

KW - subsurface cracks

KW - Vickers hardness indentation

KW - Vickers indentation cracks

KW - ceramic materials

KW - cracks

KW - fracture toughness

KW - silicon carbide

KW - Vickers hardness

KW - indentation

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JO - Materials Science and Technology

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ER -

Surface and subsurface Vickers indentation cracks in SiC, Si₃N₄, and sialon ceramics

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