Accession Number:

AD0422235

Title:

TECHNIQUE OF MEASURING LOW PERCENTAGES OF RETAINED AUSTENITE WITH THE USE OF FILTERED X-RADIATION AND AN X-RAY DIFFRACTOMETER,

Descriptive Note:

Corporate Author:

SPRINGFIELD COLL MASS

Personal Author(s):

Report Date:

1963-01-02

Pagination or Media Count:

18.0

Abstract:

An investigation was made to develop a more accurate technique for measurement of low percentages of retained austenite. Greater accuracy was secured by measurement of integrated intensities of selected martensitic and austenitic diffraction lines within a known probable error. This operation was performed automatically by step-scanning diffraction lines with the use of a counting-rate computer. Retained austenite behavior in carburized 9310 steel was successfully studied by this technique. The subject technique of applying the X-ray method extends the range of measuring retained austenite to comparatively low percentages without requiring the use of a crystal monochromater. The measurement of retained austenite can be performed on the surface of the specimen. The same area can be given subsequent treatments and then be re-evaluated. The technique is described and an application of this technique is discussed. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE