Abstract
Consideration is given the possibility that embryos retained from a higher temperature may assist in subsequent nucleation processes. Quantitative thermodynamic and kinetic constraints are found to exist for formation and retention of “precipitation-type” embryos. It is shown for dilute solutions that the spectrum of concentration fluctuations is independent of temperature, so that quenching rate is not a consideration. Various suggestions for the martensite nucleus are considered.
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This paper is based on a presentation made at a symposium on Altering the Time Cycle of Heat Treatment, held at the Philadelphia meeting of The Metallurgical Society of AIME, October 14, 1969, under the sponsorship of the IMD Heat Treatment Committee.
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Russell, K.C. The role of quenched-ln embryos in solid-state nucleation processes. Metall Trans 2, 5–12 (1971). https://doi.org/10.1007/BF02662633
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DOI: https://doi.org/10.1007/BF02662633