ASTM GRAIN-SIZE MODEL AND RELATED RANDOM TESSELLATION MODELS

被引：20
|
作者：
HORALEK, V
机构：
[1] National Research Institute for Machine Design
来源：
MATERIALS CHARACTERIZATION | 1990年 / 25卷 / 03期
关键词：
American Society for Testing and Materials Standards;
D O I：
10.1016/1044-5803(90)90057-Q
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Three random tessellation models, the Poisson-Voronoi model, the homogeneous Johnson-Mehl model with constant nucleation intensity and constant grain growth rate, and the nonhomogeneous Johnson-Mel model with time-dependent nucleation intensity and constant growth rate, were investigated together with the grain-size model used in ASTM E 112-82. For each model, the corresponding physical backgrounds are outlined, and the expressions for basic characteristics of spatial and planar structure with space-filling grains of a single phase are introduced. The internal relationships among tessellations are derived and analyzed. © 1990.
引用
收藏
页码：263 / 284
页数：22
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