Plasma Plume Induced During Laser Welding of Magnesium Alloys

Autor:	V. Azharonok, J. Hoffman, Z. Szymański
Rok vydání:	2006
Předmět:	Electron density Materials science Laser beam welding Plasma Welding Spectral line law.invention symbols.namesake Stark effect law symbols Electron temperature Atomic physics Magnesium alloy
Zdroj:	AIP Conference Proceedings.
ISSN:	0094-243X
DOI:	10.1063/1.2168887
Popis:	The plasma produced during laser welding of magnesium alloy is studied. The space‐averaged electron densities are determined from the Stark broadening of the 4481.16 A Mg II spectral line. Their values reach 1.6×1023 m−3 near the metal surface. The intensities of the measured atomic 5528.41 A Mg I spectral line and 4481.16 A Mg II spectral line depend on the plasma temperature and their profiles vary with the temperature and electron density. This fact was used to reproduce the radial temperature distribution in the plasma plume. The shape of the temperature distribution was assumed according to numerical calculations of plasma plume and exact values were found fitting the synthetic line profile to the experimental one. It has been found that the maximum plasma temperature is 8000 K.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d2470f61751b58d9761775099e14c147 https://doi.org/10.1063/1.2168887 Zobrazit plný text záznamu