形核率（N）是单位时间、单位体积中形成的晶核数，单位是1/（s·cm3）。按照经典形核长大理论，相变是通过其有临界大小的晶核形成及核的进一步长大来进行；形核率的大小将影响相变过程的速度。
The reduction of mould temperatures leads to the increasing of the undercooling and the nucleation of Si phases during the solidification, which restricts the growth of Si phases.
较低的模具温度提高了合金熔体凝固时的过冷度，增加了硅等相的形核率，使硅相的生长受到限制。
参考来源 - 共晶AlIt was found in our experiment that as long as one hour scratching, the Si surfaces were suitable for even and high density of diamond nucleation on them. This facilitated the deposit of nanocrystalline diamond films with smooth surfaces.
实验发现超声处理一小时,才能够使金刚石形核均匀,形核率高,生长出来的金刚石膜表面光滑。
参考来源 - 纳米金刚石薄膜和p型金刚石薄膜的制备和性能研究·2,447,543篇论文数据，部分数据来源于NoteExpress
阐述了挤压铸造比压对形核率及成长线速度的影响。
Effects of the specific pressure on nucleation rate and linear growth velocity were expounded in squeeze casting.
确定了超过冷条件下晶体组织的骤然细化起因于大过冷度下的高形核率。
The sudden refinement of crystal structure is determined by the high nucleation rate under large undercooling.
最后在经典形核理论的前提下讨论了奥氏体形变对铁素体形核率的影响。
The effect of austenite deformation on nucleation rate of ferrite is discussed with classical nucleation theory as well.
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