Parametric Study of Microstructural Properties at Laser Cladding

Autor:	V. G. Niziev, F. Kh. Mirzade, M. D. Khomenko
Rok vydání:	2019
Předmět:	010302 applied physics Cladding (metalworking) Phase transition Materials science business.industry Physics::Optics General Chemistry Mechanics Computational fluid dynamics 010403 inorganic & nuclear chemistry Condensed Matter Physics Microstructure 01 natural sciences Grain size 0104 chemical sciences Mass transfer 0103 physical sciences Heat transfer General Materials Science Coaxial business
Zdroj:	Crystallography Reports. 64:687-690
ISSN:	1562-689X 1063-7745
Popis:	Self-consistent numerical model of laser cladding with coaxial powder injection has been developed. The model takes into account the heat transfer, hydrodynamics, solute transport, and phase transition kinetics. The additive process is numerically analyzed using the open-source computational fluid dynamics (CFD) package. The S-CLSVOF program is adapted for modeling heat and mass transfer and free boundary evolution of the melt pool. The phase transition is modeled using the Johnson–Mehl–Avrami–Kolmogorov equation with allowance for nonuniform temperature distribution on the melt pool surface. The clad-layer microstructure is investigated as a function of the process parameters. High scan rate is shown to result in a finer grain size of clad layer structure. The data obtained can be used for construct a cladding process map.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9633c0a0f5cba13128a3124b48e66958 https://doi.org/10.1134/s106377451904028x Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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