Accession Number : AD0475332

Title :   AN X-RAY METHOD FOR FOLLOWING THE PRECIPITATION PROCESS IN POLYCRYSTALLINE ALUMINUM-COPPER.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Larsen, John T.

Report Date : 1965

Pagination or Media Count : 65

Abstract : An experimental study has been made of the feasibility of following the precipitation process in a polycrystalline aluminum-2 and 1/2% copper alloy. The intermediate structures formed during ageing were previously determined by single crystal methods. The sequence of structures was followed by analysis of the diffractometer line profile of the alpha(200) peaks. The experimental profiles were corrected for instrumental broadening by the Stokes method. One-dimensional Patterson projections of the electron density distribution in the alloys were synthesized from corrected profiles. The complete sequence of intermediate precipitates could not be realized in this investigation. (Author)

Descriptors :   (*ALUMINUM ALLOYS, DISPERSION HARDENING), (*DISPERSION HARDENING, X RAY DIFFRACTION), AGE HARDENING, COPPER ALLOYS, METAL CRYSTALS, HARDNESS, COMPUTER PROGRAMMING, PROGRAMMING LANGUAGES, HEAT TREATMENT, FOURIER ANALYSIS, SPECIAL FUNCTIONS(MATHEMATICAL).

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE