Accession Number : AD0467156

Title :   RAPID CONTROL ANALYSIS OF 18-PERCENT NICKEL MARAGING STEELS BY X-RAY SPECTROMETRY,

Corporate Author : ARMY MISSILE RESEARCH DEVELOPMENT AND ENGINEERING LAB REDSTONE ARSENAL AL PRO PULSION DIRECTORATE

Personal Author(s) : Alley, Bernard J.

Report Date : 15 JUN 1965

Pagination or Media Count : 19

Abstract : Rapid nondestructive X-ray spectrometric procedures were developed for the analyses of molybdenum, manganese, titanium, nickel, cobalt, aluminum, and silicon in the 18-percent nickel maraging series of steels. Regression equations relating characteristic X-ray intensity ratios and corresponding element percentages were derived by assuming a simple linear regression model which neglects matrix effects. Element percentages in unknown steel samples are estimated either from graphs of the regression equations or the inverse working equations. Since primary standards were not available for calibration, the suitability of the method was assessed by the goodness of fit of the assumed model to the data. The method is considered suitable for checking the compositions of 18percent nickel maraging steels. (Author)

Descriptors :   (*MARAGING STEELS, QUALITY CONTROL), (*NUCLEAR RADIATION SPECTROMETERS, MARAGING STEELS), QUANTITATIVE ANALYSIS, ROCKET ENGINE CASES, MOLYBDENUM, MANGANESE, TITANIUM, NICKEL, COBALT, ALUMINUM, SILICON, INSTRUMENTATION, CALIBRATION, MATHEMATICAL ANALYSIS, GONIOMETERS, LITHIUM COMPOUNDS, FLUORIDES, PROPANOLS, INTENSITY, LINE SPECTRA, TEMPERATURE, ERRORS, INTERFERENCE, CHROMIUM, SULFUR.

Distribution Statement : APPROVED FOR PUBLIC RELEASE