Standard Test Method for Determining Volume Fraction by Systematic Manual Point Count

Importancia y uso:

5.1 This test method is based upon the stereological principle that a grid with a number of regularly arrayed points, when systematically placed over an image of a two-dimensional section through the microstructure, can provide, after a representative number of placements on different fields, an unbiased statistical estimation of the volume fraction of an identifiable constituent or phase (1, 2, 3).3

5.2 This test method has been described (4) as being superior to other manual methods with regard to effort, bias, and simplicity.

5.3 Any number of clearly distinguishable constituents or phases within a microstructure (or macrostructure) can be counted using the method. Thus, the method can be applied to any type of solid material from which adequate two-dimensional sections can be prepared and observed.

5.4 A condensed step-by-step guide for using the method is given in Annex A1.

Subcomité:

E04.14

Referida por:

A0982_A0982M-10R20, A0565_A0565M-10R17E01, A0799_A0799M-10R20, E2109-01R21, F0755-19, A0995_A0995M-20, B0927_B0927M-23, D4616-23, E1268-19, D2799-23, A0800_A0800M-20, A1021_A1021M-20, B0848_B0848M-21, E1268-19, A0874_A0874M-98R22, A0890_A0890M-18A, E1181-02R23, E1382-97R23, F0561-19, E0112-24, E0112-24, E0112-24

Volúmen:

03.01

Número ICS:

77.040.99 (Other methods of testing metals)