Thermophysical properties of five industrial steels in the solid and in the liquid phase

Boris Wilthan, Wolfgang Schützenhöfer, Gernot R. Pottlacher

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The need for characterization of thermophysical properties of steel was addressed in the FFG-Bridge Project 810999 in cooperation with our partner from industry, Böhler Edelstahl GmbH & Co KG. To optimize numerical simulations of production processes such as plastic deformation or remelting, additional and more accurate thermophysical property data were necessary for the group of steels under investigation. With the fast ohmic pulse heating circuit system and a commercial high-temperature Differential Scanning Calorimeter at Graz University of Technology, we were able to measure the temperature-dependent specific electrical resistivity and specific enthalpy for a set of five high alloyed steels: E105, M314, M315, P800, and V320 from room temperature up into the liquid phase. The mechanical properties of those steels make sample preparation an additional challenge. The described experimental approach typically uses electrically conducting wire-shaped specimen with a melting point high enough for the implemented pyrometric temperature measurement. The samples investigated here are too brittle to be drawn as wires and could only be cut into rectangular specimen by Electrical Discharge Machining. Even for those samples all electrical signals and the temperature signal can be recorded with proper alignment of the pyrometer. For each material under investigation, a set of data including chemical composition, solidus and liquidus temperature, enthalpy, electrical resistivity, and thermal diffusivity as a function of temperature will be reported.
Original languageEnglish
Number of pages15
JournalInternational Journal of Thermophysics
DOIs
Publication statusPublished - 3 Apr 2017
EventXIII International Symposium on Temperature and Thermal Measurements in Industry and Science - Zakopane, Poland
Duration: 26 Jun 20161 Jul 2016
Conference number: 13
http://www.tempmeko2016.pl/

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thermophysical properties
liquid phases
steels
enthalpy
wire
pulse heating
pyrometers
electrical resistivity
temperature
solidus
liquidus
thermal diffusivity
machining
plastic deformation
melting points
calorimeters
temperature measurement
chemical composition
industries
alignment

Fields of Expertise

  • Advanced Materials Science

Cite this

Thermophysical properties of five industrial steels in the solid and in the liquid phase. / Wilthan, Boris; Schützenhöfer, Wolfgang; Pottlacher, Gernot R.

In: International Journal of Thermophysics, 03.04.2017.

Research output: Contribution to journalArticleResearchpeer-review

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