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Metals 2016, 6(1), 2; doi:10.3390/met6010002

Continuous Casting of Incoloy800H Superalloy Billet under an Alternating Electromagnetic Field

Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, No. 3-11, Wenhua Road, Shenyang 110004, China
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Academic Editor: Johan Moverare
Received: 28 October 2015 / Revised: 10 December 2015 / Accepted: 15 December 2015 / Published: 23 December 2015
(This article belongs to the Special Issue Superalloys)
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Abstract

We experimentally investigate the influence of an alternating electromagnetic field on the surface and internal qualities of Incoloy800H superalloy billets. The electromagnetic continuous casting experiments for Incoloy800H superalloy were successfully conducted and the billets (0.1 m × 0.1 m × 1.2 m) were obtained. We figure out that the high frequency (20.4 kHz) electromagnetic field which is applied in the mould region can improve the surface quality of Incoloy800H superalloy billet remarkably; the depth of oscillation mark decreases from 1.2 mm (without electromagnetic field) to 0.3 mm (with electromagnetic field). The internal quality of the billet was studied using a variety of characterization techniques. The low frequency (5 Hz) electromagnetic field which is applied in the second cooling region can improve the internal quality; the region of the equiaxed grain increases from 2.45% (without electromagnetic field) to 41.45% (with electromagnetic field). Furthermore, macro- and micro-segregation are suppressed and the TiN inclusion number is decreased as well. View Full-Text
Keywords: continuous casting; electromagnetic stirring; Incoloy800H superalloy; oscillation marks; segregation; TiN inclusion continuous casting; electromagnetic stirring; Incoloy800H superalloy; oscillation marks; segregation; TiN inclusion
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Wang, F.; Zhang, L.; Deng, A.; Xu, X.; Wang, E. Continuous Casting of Incoloy800H Superalloy Billet under an Alternating Electromagnetic Field. Metals 2016, 6, 2.

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