Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9795494 | Materials Science and Engineering: A | 2005 | 5 Pages |
Abstract
The eutectic solidification range (ESR) is the difference between the eutectic temperature of the stable Fe-C-system (iron-carbon, iron-graphite) and the eutectic temperature of the metastable Fe-Fe3C-system (iron-ironcarbide, iron-cementite). This range is a key to graphitization. The size and the location of the range are important to determine the solidification system: grey or mottled or white. Quantitative investigations by thermal analysis (TA) with croning-sand and steel crucibles at the Technical University Clausthal in Germany gave the following results: Si and Al expand the range, the stable system is promoted. Cu and Ni have no significant influence. P, Mn, Cr, Mo and S contract the range, the metastable system is promoted. Increasing cooling rate normally decreases the transformation temperatures. Concerning these results a combination of thermal analysis and the spectrometric analysis could be very useful. Variations in chemical composition can be taken into account to evaluate temperature-time curves and graphitization tendency more accurately.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Reinhard Doepp, Stephan Schwenkel,