科研之友
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摘要
On the basis of describing the classical nucleation theory of martensitic transformation and considering in detail the original derivation of nucleation probability through statistical physics by Fisher et al, the present work points out the mistakes appearing in the recent works of some authors who negated the calculation of the nucleation probability of martensitic transformation with Cohen and Kaufman. The nucleation barrier DeltaG* in calculating the nucleation probability should be the free energy change of total atoms in an embryo, rather than that of an atom. The experiments cited by these scholars, supporting their viewpoint of homogeneous nucleation of martensitic transformation, are re-explained and the nucleation model suggested by them is critically reviewed by us with the basic concept of statistical physics. Finally, several research directions are briefly suggested for study of the nucleation of martensitic transformation.
- 出版日期2004-4
- 单位上海交通大学
