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ASTM E1382-97
Standard Test Methods for Determining Average Grain Size Using Semiautomatic and Automatic Image Analysis
STANDARD published on 10.4.1997
The information about the standard:
Designation standards: ASTM E1382-97
Note: WITHDRAWN
Publication date standards: 10.4.1997
SKU: NS-41568
The number of pages: 22
Approximate weight : 66 g (0.15 lbs)
Country: American technical standard
Category: Technical standards ASTM
Annotation of standard text ASTM E1382-97 :
Keywords:
ALA grain size, Anisotropy index, ASTM grain size number (G), Digitizing tablet, Duplex grain structures, Equiaxed grains, Image analysis-metallic, Intercept length/Intersection count methods, Metallography, Metals and metallic materials, Microscopic examination-metals/alloys, Microstructure, Nonequiaxed grains, Nonmetallic materials, Polycrystalline metals/nonmetallic materials, Semiautomated methods, Specimen preparation (for testing)-metals/alloys, Watershed segmentation
Additional information
| 1. Scope | ||||||||||||||||||
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1.1 These test methods are used to determine grain size from measurements of grain intercept lengths, intercept counts, intersection counts, grain boundary length, and grain areas. 1.2 These measurements are made with a semiautomatic digitizing tablet or by automatic image analysis using an image of the grain structure produced by a microscope. 1.3 These test methods are applicable to any type of grain structure or grain size distribution as long as the grain boundaries can be clearly delineated by etching and subsequent image processing, if necessary. 1.4 These test methods are applicable to measurement of other grain-like microstructures, such as cell structures. 1.5 This standard deals only with the recommended test methods and nothing in it should be construed as defining or establishing limits of acceptability or fitness for purpose of the materials tested. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1.7 The sections appear in the following order: Section Section Scope 1 Referenced Documents 2 Terminology 3 Definitions 3.1 Descriptions of Terms Specific to This Standard 3.2 Symbols 3.3 Summary of Test Method 4 Significance and Use 5 Interferences 6 Apparatus 7 Sampling 8 Test Specimens 9 Specimen Preparation 10 Calibration 11 Procedure: Semiautomatic Digitizing Tablet 12 Intercept Lengths 12.3 Intercept and Intersection Counts 12.4 Grain Counts 12.5 Grain Areas 12.6 ALA Grain Size 12.6.1 Two-Phase Grain Structures 12.7 Procedure: Automatic Image Analysis 13 Grain Boundary Length 13.5 Intersection Counts 13.6 Mean Chord (Intercept) Length/Field 13.7 Individual Chord (Intercept) Lengths 13.7.4 Grain Counts 13.8 Mean Grain Area/Field 13.9 Individual Grain Areas 13.9.4 ALA Grain Size 13.9.8 Two-Phase Grain Structures 13.10 Calculation of Results 14 Test Report 15 Precision and Bias 16 Grain Size of Non-Equiaxed Grain Structure Specimens A1 Examples of Proper and Improper Grain Boundary Delineation A2 |
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