Regular Article

Laser-induced modification of aluminum micropowders in selective laser melting mode

F. V. Kashaev$^1$, D. V. Shuleiko$^1$, S. V. Zabotnov$^1$, A. V. Skobelkina$^1$, A. K. Petrov$^2$, A. V. Chetvertukhin$^3$, P. V. Evdokimov$^4$, A. V. Garshev$^4$, V. I. Putlayev$^4$

Memoirs of the Faculty of Physics 2018. N 1.

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Selective laser melting of the powders of AlSi10Mg alloy, characterized various sizes and shapes of particles, has been carried out in vacuum and argon by laser pulses with submillisecond duration. As a result of this modification, the structures are formed with porosity, depending both on the geometric parameters of the particles in the initial powders and on the atmosphere in which irradiation was carried out. For the first time by means of the Raman spectroscopy a considerable change in the mechanical stresses and fraction of crystalline state silicon in the studied structures before and after selective laser melting was registered.

Received: 2017 November 24

Approved: 2018 January 29

PACS:

81.20.-n Methods of materials synthesis and materials processing
68.37.Hk Scanning electron microscopy
42.62.-b Laser applications

Authors

F. V. Kashaev$^1$, D. V. Shuleiko$^1$, S. V. Zabotnov$^1$, A. V. Skobelkina$^1$, A. K. Petrov$^2$, A. V. Chetvertukhin$^3$, P. V. Evdokimov$^4$, A. V. Garshev$^4$, V. I. Putlayev$^4$
$^1$Faculty of Physics, Lomonosov Moscow State University, chair of General Physics and Molecular Electronics.\
$^2$Faculty of Physics, Lomonosov Moscow State University, chair of Quantum electronics .\
$^3$Faculty of Physics, Lomonosov Moscow State University, chair of Magnetism.\
$^4$Faculty of Materials Science, Lomonosov Moscow State University, chair of Interdisciplinary Materials Science

Issue 1, 2018

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