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Surface tension and viscosity of the Ni-based superalloys LEK94 and CMSX-10 measured by the Oscillating Drop Method on board a parabolic flight

Wunderlich, Rainer and Fecht, H. J. and Lohöfer, Georg (2017) Surface tension and viscosity of the Ni-based superalloys LEK94 and CMSX-10 measured by the Oscillating Drop Method on board a parabolic flight. Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, 48B, pp. 237-246. Springer. ISSN 1073-5615

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Abstract

The surface tension and viscosity of the Ni-based superalloys LEK94 and CMSX-10 were measured by the oscillating drop method in a containerless electromagnetic processing device on board a parabolic flight airplane. Surface oscillations were recorded by 150 and 200 Hz Frame rate digital cameras positioned in two perpendicular directions and by the inductive coupling between the oscillating sample surface and the oscillating circuit of the radio frequency heating and positioning generator. The surface tension as a function of temperature of LEK94 and CMSX-10 was obtained as r(T) = 1.73 � 4.51 9 10�4 [T—1656 K (1383 �C)] Nm�1 and r(T) = 1.71 � 5.80 9 10�4 [(T—1683 K (1410 �C)] Nm�1, respectively. The viscosity at the liquidus temperatures as 9.8 and 7.8 mPa.s, respectively. In addition, some basic thermophysical properties such as solidus and liquidus temperatures, densities at room temperature, and thermal expansion in the solid phase are reported.

Item URL in elib:https://elib.dlr.de/112009/
Document Type:Article
Title:Surface tension and viscosity of the Ni-based superalloys LEK94 and CMSX-10 measured by the Oscillating Drop Method on board a parabolic flight
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Wunderlich, RainerUniversität UlmUNSPECIFIED
Fecht, H. J.Universität UlmUNSPECIFIED
Lohöfer, Georggeorg.lohoefer (at) dlr.deUNSPECIFIED
Date:2017
Journal or Publication Title:Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:48B
Page Range:pp. 237-246
Publisher:Springer
ISSN:1073-5615
Status:Published
Keywords:surface Tension, viscosity, Ni-based superalloys, electromagnetic processing, parabolic flight
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Vorhaben Materialforschung unter Mikro-g (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Lohöfer, Georg
Deposited On:25 Apr 2017 09:09
Last Modified:31 Jul 2019 20:09

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