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Acoustic Emission Characterization of Transgranular Cracks in WC–Co Cemented Carbides During a One-way Scratch

Tribology letters, 2021-12, Vol.69 (4), Article 133 [Peer Reviewed Journal]

The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2021 ;The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2021. ;Distributed under a Creative Commons Attribution 4.0 International License ;ISSN: 1023-8883 ;EISSN: 1573-2711 ;DOI: 10.1007/s11249-021-01509-8

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Title:
Acoustic Emission Characterization of Transgranular Cracks in WC–Co Cemented Carbides During a One-way Scratch
Author: Yahiaoui, M. ; Marconnet, M. ; Jlaiel, K. ; Paris, J.-Y. ; Denape, J.
Subjects: Acoustic emission ; Cemented carbides ; Centroids ; Chemistry and Materials Science ; Cobalt ; Corrosion and Coatings ; Cracks ; Depletion ; Emission analysis ; Engineering Sciences ; Equations of motion ; Harmonic motion ; Materials Science ; Mechanics ; Mechanics of materials ; Nanotechnology ; Original Paper ; Physical Chemistry ; Sliding friction ; Surfaces and Interfaces ; Theoretical and Applied Mechanics ; Thin Films ; Transgranular cracks ; Tribology ; Tungsten carbide ; Wear mechanisms
Is Part Of: Tribology letters, 2021-12, Vol.69 (4), Article 133
Description: The tribological behavior of tungsten carbide–cobalt materials is influenced by the cobalt content and the WC grains size. The main wear mechanisms in these materials are cobalt depletion, intergranular cracks, and WC grain cleavages. More specifically, coarse WC grains favor the apparition of transgranular cracks during sliding friction tests. A promising way to access in real-time blinded tribological contacts is the technique of acoustic emission (AE). This study clearly identifies transgranular cracks in AE signals. The AE energy and frequency of this mechanism were experimentally associated with the size of the transgranular cracks. A mechanical model based on the classical beam theory and harmonic motion equations confirms these relations. The AE centroid period (i.e., inverse of the centroid frequency) increases linearly with the size of the transgranular cracks. The AE energy increases linearly with the cube of the transgranular cracks length. Graphical Abstract
Publisher: New York: Springer US
Language: English
Identifier: ISSN: 1023-8883
EISSN: 1573-2711
DOI: 10.1007/s11249-021-01509-8
Source: Hyper Article en Ligne (HAL) (Open Access)
ProQuest Central

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Acoustic Emission Characterization of Transgranular Cracks in WC–Co Cemented Carbides During a One-way Scratch

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