Kinetic approach in numerical modeling of melting and crystallization at laser cladding with powder injection
| Autor: | F. Kh. Mirzade, V. Ya. Panchenko, R. V. Grishaev, Sisa Pityana, Corney van Rooyen, V. G. Niziev, M. D. Khomenko |
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| Rok vydání: | 2013 |
| Předmět: |
Cladding (metalworking)
Materials science Carbon steel Martensitic stainless steel engineering.material Condensed Matter Physics Electronic Optical and Magnetic Materials law.invention Superheating law Heat transfer engineering Laser power scaling Electrical and Electronic Engineering Composite material Crystallization Supercooling |
| Zdroj: | Physica B: Condensed Matter. 423:69-76 |
| ISSN: | 0921-4526 |
| Popis: | The numerical model of laser cladding with coaxial powder injection includes the equations for heat transfer, melting and crystallization kinetics. It has been shown that the main parameters influencing the melt pool dynamics and medium maximum temperature are mass feed rate, laser power and scanning velocity. It has been observed that, due to the phase change occurring with superheating/undercooling, the melt zone has the boundary distinguished from melting isotherm. The calculated melt pool dimensions and dilution are in a good agreement with the experimental results for cladding of 431 martensitic stainless steel onto carbon steel substrate. |
| Databáze: | OpenAIRE |
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