Experimental investigation of Al-alloy directional solidification in pulsed electromagnetic field

verfasst von

D. A. Musaeva, E. Baake, V. K. Ilin

Abstract

The paper considers the influence of low-frequency pulsed force of an electromagnetic field on the formation of a solidifying metal structure, investigated experimentally. Pulses in the range from 0.1 to 10 Hz were applied to the melt, during the ingots growth in the cylindrical volume, to create the conditions of the forced convection. The final metal structure and deformation of the samples free surface, solidified in different conditions was analyzed. The reduction of porosity in metal ingots was stated for the cases of forced convection under the pulsed frequencies from 0.1 to 1 Hz, in comparison to the structure, formed by permanent electromagnetic stirring. The specimens, grown under the pulsed forcing with equal time of the pulses and the pauses have concave free surface, as well as in the cases of natural convection and permanent stirring. A flatter form of the free surface was obtained during the solidification process under the short pulses of electromagnetic force.

Organisationseinheit(en)

Institut für Elektroprozesstechnik

Externe Organisation(en)

Kazan State Power Engineering University

Typ

Konferenzaufsatz in Fachzeitschrift

Journal

Materials Science Forum

Band

870

Seiten

471-476

Anzahl der Seiten

6

ISSN

0255-5476

Publikationsdatum

05.09.2016

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Werkstoffwissenschaften (insg.), Physik der kondensierten Materie, Werkstoffmechanik, Maschinenbau

Elektronische Version(en)

https://doi.org/10.4028/www.scientific.net/MSF.870.471 (Zugang: Geschlossen)