Morphology and mechanism of cavitation degradation of gray cast iron surfaces with lamellar graphite
| Autor: | Ilare Bordeasu, Ion Dragos Utu, Ion Mitelea, Eduard Riemschneider, Corneliu Marius Crăciunescu |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Scanning electron microscope 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Microstructure 01 natural sciences Cavitation 0103 physical sciences engineering Ultrasonic sensor Lamellar structure Graphite Cast iron Composite material 0210 nano-technology Eutectic system |
| Zdroj: | Materials Today: Proceedings. 45:4157-4160 |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2020.11.929 |
| Popis: | Gray cast iron parts with lamellar graphite in contact with liquid media can be degraded by cavitation erosion. The TIG remelting technique of the surface of these parts is an efficient way to improve the lifespan of engineering components working in cavitation environments. This paper illustrates the cavitation erosion behavior of a gray cast iron with a microstructure composed of a pearlitic matrix, a small proportion of phosphorous eutectic and lamellar graphite. The cavitation test was performed using an ultrasonic vibrator, and the liquid chosen was water from the public network. Based on the cavitation curves and the examination of the surfaces tested by optical and scanning electron microscopy, a sequence of damage models is proposed to explain the behavior of cavitation erosion. |
| Databáze: | OpenAIRE |
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