Journal
ADVANCED ENGINEERING MATERIALS
Volume 15, Issue 7, Pages 583-589Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adem.201200310
Keywords
density; liquid Cr-Mn-Ni-steels; maximum bubble pressure; surface tension; thermophysical properties
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Funding
- German Research Foundation DFG within the Collaborative Research Centre SFB 799 TRIP-Matrix-Composite at the Institute of Iron and Steel Technology, Technical University Bergakademie Freiberg
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The thermophysical properties of liquid Cr-Mn-Ni steel alloys (16wt% Cr, 7wt% Mn, and 3-9wt% Ni) are investigated using the maximum bubble pressure method in which the manganese evaporation and change in chemical composition is very low after experimental trial. The surface tension of copper was measured as reference and experimental sigma is in the range of literature values. It is shown that for AISI 304 austenitic steel the surface tension decreased by an increase of oxygen concentration in steel composition. For Cr-Ni and Cr-Mn-Ni steels, the temperature coefficient d sigma/dT is positive which is explained by sulfur steel concentrations larger 50mass ppm. A slight influence of nickel to the surface tension of Cr-Mn-Ni steels was experimentally observed where sigma was lowered by rising weight percentage of nickel.
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