| Autor: |
Escaich, Cécile, Shi, Zhongde, Baron, Luc, Balazinski, Marek |
| Zdroj: |
International Journal of Abrasive Technology; 2024, Vol. 12 Issue: 2 p147-166, 20p |
| Abstrakt: |
An experimental study is reported on the surface morphology and integrity in scratching of TiMMCs. The objective is to simulate the cutting of TiMMCs by individual grains in grinding operations. The results can also be utilised to understand the resistance to abrasion and wear of the materials. Experiments were performed at a fixed scratching speed vs= 20 m/s, and given depths of scratching ranging from 0.004 to 0.024 mm. Scratching tools with round and conical tips were selected for the tests with and without grinding fluid. Microscopic observations of the tool tips and the scratches were conducted. It was revealed that ploughing of the matrix and the re-deposition of the matrix on the scratched surface led to the mixing of the matrix with broken TiC particles. The use of grinding fluid influenced the TiC removal mechanisms in terms of 'comet tail' phenomenon and different severities of the particle breakage. The depth of scratch had a greater effect on the cupules formation. Comparison of the bottom of the scratches and the ground surfaces showed that the wheel wear had significant effects on the ground surface morphology and integrity. No evidence of whole particle dislodgements was observed. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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