Abstract
Supersaturation and precipitation of cementite and/or graphite in austenite due to electrotransport were studied. Two types of experiments were made with alloys of relatively high initial carbon concentration (1.3 wt. pct); one in the two-phase (austenite plus cementite) region at 850° and the other in the single phase (austenite) region at 927° C. In the two-phase experiments the formation of cementite and/or graphite was observed at the high-carbon end of the specimen. In the single-phase case, only a continuous layer of graphite was formed at the cathode end of the specimen. The present research suggests that electrotransport can be used to investigate processes involving supersaturation, such as precipitation from solid solution.
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