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Thermophysical properties of multicomponent liquid alloys and their measurement at elevated temperature

Brillo, Jürgen (2022) Thermophysical properties of multicomponent liquid alloys and their measurement at elevated temperature. Asian Thermophysical Properties Conference ATPC 2022, 2022-09-26 - 2022-09-30, Sendai, Japan.

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Economic-, cultural- and social- evolution goes hand in hand with the development and continuous improvement of new materials. The casting of metals, their optimization and the advancement of their production processes is especially crucial in this context. The liquid phase plays a key role in this context, as the vast majority of materials is made directly from the melt or under its direct involvement. For any process of materials development, the properties of the liquid metal need to be known precisely. As liquid metals are generally highly reactive at elevated temperature, the use of levitation methods is inevitable. In addition, technical alloys are generally multicomponent materials. This makes the investigation of the concentration dependence of their properties especially important. The present talk will describe electromagnetic levitation and corresponding diagnostic methods in order to contactlessly determine thermophysical properties such as density, surface tension, specific heat and several others. The concentration dependence of these properties will be discussed systematically. Three distinct classes of materials can be identified where the members of each class exhibit qualitatively the same behavior with respect to the mixing rules and applicable solution models. Furthermore, the effect of oxygen on the surface tension of liquid metals will be discussed using the Butler equation.

Item URL in elib:https://elib.dlr.de/192490/
Document Type:Conference or Workshop Item (Speech)
Title:Thermophysical properties of multicomponent liquid alloys and their measurement at elevated temperature
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:26 September 2022
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Thermophysical properties, multicomponent liquid alloys, electromagnetic levitation, mixing rules
Event Title:Asian Thermophysical Properties Conference ATPC 2022
Event Location:Sendai, Japan
Event Type:international Conference
Event Start Date:26 September 2022
Event End Date:30 September 2022
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 - Research under Space Conditions
DLR - Research theme (Project):R - Project EML-Steady
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Brillo, Dr.rer.nat. Jürgen
Deposited On:19 Dec 2022 07:37
Last Modified:24 Apr 2024 20:53

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