Standard Historical Last Updated: Aug 16, 2017 Track Document
ASTM E975-00

Standard Practice for X-Ray Determination of Retained Austenite in Steel with Near Random Crystallographic Orientation

Standard Practice for X-Ray Determination of Retained Austenite in Steel with Near Random Crystallographic Orientation E0975-00 ASTM|E0975-00|en-US Standard Practice for X-Ray Determination of Retained Austenite in Steel with Near Random Crystallographic Orientation Standard new BOS Vol. 03.01 Committee E04
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Scope

1.1 This practice covers the determination of retained austenite phase in steel using integrated intensities (area under peak above background) of X-ray diffraction peaks using chromium K[alpha] or molybdenum K[alpha] X-radiation.

1.2 The method applies to carbon and alloy steels with near random crystallographic orientations of both ferrite and austenite phases.

1.3 This practice is valid for retained austenite contents from 1% by volume and above.

1.4 If possible, X-ray diffraction peak interference from other crystalline phases such as carbides should be eliminated from the ferrite and austenite peak intensities.

1.5 Substantial alloy contents in steel cause some change in peak intensities which have not been considered in this method. Application of this method to steels with total alloy contents exceeding 15 weight% should be done with care. If necessary, the users can calculate the theoretical correction factors to account for changes in volume of the unit cells for austenite and ferrite resulting from variations in chemical composition.

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.

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Details
Book of Standards Volume: 03.01
Developed by Subcommittee: E04.11
Pages: 6
DOI: 10.1520/E0975-00
ICS Code: 77.080.20