Especially at low temperatures, the decomposition of austenite in plain chromium steel results in a periodic structure consisting of walls of carbide embedded in a ferrite matrix, with the walls parallel to the ferrite/austenite interface. It has been shown that this periodic eutectoid structure forms through the growth of steps at the interface in a direction parallel to it. The mechanism is assumed to be a general one in phase transformations in various alloys.
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References
1.
MannerkoskiM., Lic. Thesis, Helsinki Inst. Technology, 1962.
