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Archiopoli, U.C.; Mingolo, N.; Martínez, O.E. "Structures appearing in roughened steel surfaces obtained by self-dewetting with electron beams" (2005) Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science. 36(4):999-1006
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Abstract:

Heating and fast cooling of steel surfaces by means of a pulsed electron gun gives rise to peculiar structures characterized by a roughened surface due to spinodal self-dewetting and an intermediate region described as a heat-affected zone. In this work, numerical simulations of the heating of a steel surface by means of a pulsed electron gun are performed and contrasted with the experiments. The predictions of the depth of the melt pool and time elapsed above critical temperatures are used to interpret the experimental results. The combination of micrographs, cross sections, and numerical simulations allowed us to conclude that the instabilities giving rise to the dewetting structure are not related to vapor ejection. It is also concluded that the onset of the instability is a very fast process (on the order of at most a few microseconds), yielding a dewetting process that evolves in the entire melted pool, and that the spatial pattern scales with time elapsed above the melting temperature and the pool depth. The heat-affected zone (intermediate region) can now be understood to be where a solid-solid transformation occurs.

Registro:

Documento: Artículo
Título:Structures appearing in roughened steel surfaces obtained by self-dewetting with electron beams
Autor:Archiopoli, U.C.; Mingolo, N.; Martínez, O.E.
Filiación:Laboratory of Haces Dirigidos, Department of Physics, Facultad de Ingeniería, C1063ACV Buenos Aires, Argentina
Laboratory of Electronica Cuantica, Department of Physics, Facultad Cie. Exactas y Naturales, C1428EGA Buenos Aires, Argentina
Palabras clave:Boundary conditions; Computer simulation; Cooling; Electron beams; Electron guns; Heating; Mathematical models; Phase transitions; Scanning electron microscopy; Surface roughness; Thermal effects; Wetting; Micrograph; Pulsed electron gun; Self-dewetting; Solid-solid transformation; Steel surface; Steel
Año:2005
Volumen:36
Número:4
Página de inicio:999
Página de fin:1006
DOI: http://dx.doi.org/10.1007/s11661-005-0293-y
Título revista:Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Título revista abreviado:Metall Mat Trans A Phys Metall Mat Sci
ISSN:10735623
CODEN:MMTAE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10735623_v36_n4_p999_Archiopoli

Referencias:

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Citas:

---------- APA ----------
Archiopoli, U.C., Mingolo, N. & Martínez, O.E. (2005) . Structures appearing in roughened steel surfaces obtained by self-dewetting with electron beams. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 36(4), 999-1006.
http://dx.doi.org/10.1007/s11661-005-0293-y
---------- CHICAGO ----------
Archiopoli, U.C., Mingolo, N., Martínez, O.E. "Structures appearing in roughened steel surfaces obtained by self-dewetting with electron beams" . Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science 36, no. 4 (2005) : 999-1006.
http://dx.doi.org/10.1007/s11661-005-0293-y
---------- MLA ----------
Archiopoli, U.C., Mingolo, N., Martínez, O.E. "Structures appearing in roughened steel surfaces obtained by self-dewetting with electron beams" . Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, vol. 36, no. 4, 2005, pp. 999-1006.
http://dx.doi.org/10.1007/s11661-005-0293-y
---------- VANCOUVER ----------
Archiopoli, U.C., Mingolo, N., Martínez, O.E. Structures appearing in roughened steel surfaces obtained by self-dewetting with electron beams. Metall Mat Trans A Phys Metall Mat Sci. 2005;36(4):999-1006.
http://dx.doi.org/10.1007/s11661-005-0293-y