Lal, D and Tripathi, A and Ghosh, A and Bathe, R and Kumar, P and Jayaram, V (2022) Use of Compression-Bending Fracture Geometry to Study the Effects of Stoichiometry on Fracture Toughness of β-NiAl. In: 3rd Structural Integrity Conference and Exhibition, SICE 2020, 11-13 December 2020, IIT Bombay, pp. 313-320.
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Compression-bending fracture geometry is a stable fracture geometry, which can enable the study of crack propagation and associated processes, such as crack bridging and microstructural and compositional inhomogeneity induced variation of fracture toughness and R-curve behavior. It was observed that surface friction strongly influences the fracture behavior of this geometry. The existing equation of Mode I stress intensity factor, KI, has been found to be accurate for the case of very low platen-sample surface friction and a narrow range of crack length. The fracture toughness of bulk polycrystalline β-NiAl of two compositions was measured using this geometry. The measured values of fracture toughness of Ni-50Al and Ni-40Al are 1.7 ± 0.6 and 4.3 ± 1 MPa m0.5, respectively. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
| Item Type: | Conference Paper |
|---|---|
| Publication: | Lecture Notes in Mechanical Engineering |
| Publisher: | Springer Science and Business Media Deutschland GmbH |
| Additional Information: | The copyright for this article belongs to Springer Science and Business Media Deutschland GmbH |
| Department/Centre: | Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy) |
| Date Deposited: | 23 May 2022 06:03 |
| Last Modified: | 23 May 2022 06:03 |
| URI: | https://eprints.iisc.ac.in/id/eprint/71864 |
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