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  5. Effect of chromium doping on the grain boundary character of WC-Co
 
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Effect of chromium doping on the grain boundary character of WC-Co
File(s)
1-s2.0-S0263436824004025-main (1).pdf (2.77 MB)
Published version
Author(s)
Emmanuel, Max
Li, Zhuoqi Lucas
Heptinstall, Harry
Gavalda-Diaz, Oriol
M'saoubi, Rachid
more
Type
Journal Article
Abstract
The life of cutting tool inserts is critically important for efficient machining, reducing manufacturing cost, embedded energy, and enabling more complex parts to be machined. For these applications, cemented carbide (WC-Co) materials are a prime candidate. The performance of these materials can be limited by early fracture, typically via an intergranular fracture path with respect to carbide grains. This motivates further studies to understand the character of the grain boundary network so that grain boundary engineering (GBE) of WC-Co tools can be used to improve tool life and performance. In this work, we have used Rohrer et al.'s five-parameter grain boundary character distribution (GBCD) analysis to examine the grain boundary network of WC-10wt%Co and WC-10wt%Co-1wt%Cr samples (Rohrer et al., 2004a [1]). It was found that the measured area fraction of the Σ2 boundaries was comparable to the values reported in the literature despite the relatively larger grain sizes (~14 μm) and higher cobalt contents. The result suggests that chromium doping increases the area fraction of Σ2 boundaries from 12.8 % to 14.8 %. It is proposed that this is a consequence of altering the Σ2 boundary energy, as associated with adding chromium.
Date Issued
2025-01
Date Acceptance
2024-11-04
Citation
International Journal of Refractory Metals and Hard Materials, 2025, 126
URI
http://hdl.handle.net/10044/1/115642
URL
http://dx.doi.org/10.1016/j.ijrmhm.2024.106954
DOI
https://www.dx.doi.org/10.1016/j.ijrmhm.2024.106954
ISSN
0263-4368
Publisher
Elsevier
Journal / Book Title
International Journal of Refractory Metals and Hard Materials
Volume
126
Copyright Statement
© 2024 Published by Elsevier Ltd. This work is licensed under a Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/).
License URL
https://creativecommons.org/licenses/by/4.0/
Identifier
http://dx.doi.org/10.1016/j.ijrmhm.2024.106954
Publication Status
Published
Article Number
106954
Date Publish Online
2024-11-07
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