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Fracture toughness determination methods of WC-Co cemented carbide material at micro-scale from micro-bending method using nanoindentation
- Source :
- Journal of Materials Research and Technology; January-February 2024, Vol. 28 Issue: 1 p1370-1381, 12p
- Publication Year :
- 2024
-
Abstract
- Determining toughness properties is crucial for the development of components made of brittle materials, especially at the microscale. Numerous methods rely on establishing a limit load that triggers the propagation of a pre-cracked specimen. The primary challenge lies in accurately and repeatably determining this limit load value. In this study, we introduce a coupled numerical-experimental approach to determine the stress intensity factor at the microscale using a micro-bending test on pre-notched cemented carbide micro-cantilevers. Specimens are fabricated through micro-electrical-discharge milling, and the initial crack is generated using a focused ion beam process to ensure a repeatable crack shape. Geometries are defined to validate beam theories.
Details
- Language :
- English
- ISSN :
- 22387854
- Volume :
- 28
- Issue :
- 1
- Database :
- Supplemental Index
- Journal :
- Journal of Materials Research and Technology
- Publication Type :
- Periodical
- Accession number :
- ejs64841602
- Full Text :
- https://doi.org/10.1016/j.jmrt.2023.12.071