Stereological characterization of particle contiguity
Stereological characterization of particle contiguity
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DOI：
10.1046/j.1365-2818.1996.92373.x
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发表时间：
1996-01
影响因子：
2
通讯作者：
G. Liu;H. Yu
中科院分区：
文献类型：
--
作者：
G. Liu;H. Yu
用于表征真实的微观结构中不存在的虚拟特征的一些参数，例如由第二相颗粒与基质相的虚拟晶界表面之间的界面形成的相交曲线在单位体积中的总长度，对于晶界表面上的颗粒轮廓邻接的定量表征是有用的，并且可以通过在随机抛光平面上的测量以无偏的方式确定。结果表明，Gurland提出的C3 D、Cahn & Hilliard提出的LV‐type和Liu提出的CGB都具有不同的物理意义，并提供了不同的粒子邻接性定量信息。反向体视学原理适用于邻接参数C3 D和CGB，因为它们的估计量是可比的。对五个系列低碳Ti-B或V-Ti-B钢等温奥氏体-铁素体相变过程进行的连续分析证实了所提出方法的可行性。
Some parameters used to characterize fictitious features not existing in the real microstructure, such as the total length in a unit volume of the intersection curves made by the interface between the particles of secondary phase with the fictitious grain boundary surface of the matrix phase, are useful for the quantitative characterization of particle–profile contiguity on grain boundary surfaces, and can be determined in an unbiased way from measurements on random planes of polish. It is shown that the contiguity parameters C3D proposed by Gurland, LV‐type by Cahn & Hilliard and CGB by Liu, all accessible stereologically, have different physical meanings and provide different kinds of quantitative information on particle contiguity. The reversed stereology principle is applicable to contiguity parameters C3D and CGB, since their estimators are comparable. The contiguity analysis carried out for isothermal austenite‐ferrite phase transformation processes occurring in five series of low‐carbon Ti–B or V–Ti–B steels has confirmed the feasibility of the methods proposed.