| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior Related to Interface Physics IV
|
| Presentation Title |
Exceptional hardness in cemented carbides - 1:1 hardness–structure–composition relationship of grain boundaries |
| Author(s) |
Hansheng Chen Haoruo Zhou, Haoruo Zhou, Ceratizit Team , Sophie Primig, Simon Peter Ringer |
| On-Site Speaker (Planned) |
Haoruo Zhou |
| Abstract Scope |
In polycrystalline materials, research on the impact of grain boundaries (GBs) on hardness often highlights average grain size as a pivotal factor, for instance, in the classical Hall–Petch relationship. Yet, GBs, with their five macroscopic degrees of freedom, often exhibit a structural and compositional complexity. These complexities can be as influential, or even more so, than average grain size in affecting GB-related hardness. In this study, we propose an innovative framework to elucidate the relationship between local hardness, structure, and composition of individual GBs. Using a WC–Co cemented carbide as our study model, we presented a clear correlation between local hardness, frequency distribution, and elemental segregation, all of which are influenced by GB misorientation angles. This framework and our findings open new avenues to further tailoring the GB segregation behavior towards improving the hardness of polycrystalline materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Mechanical Properties, Composites |