Accession Number : AD0647729

Title :   ELECTRON MICROSCOPIC AND MICRODIFFRACTION INVESTIGATION OF NONMETALLIC IMPURITIES IN MOLYBDENUM AND ITS ALLOYS,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Ageev,N. V. ; Ignatov,D. V. ; Kantor,M. M.

Report Date : 07 DEC 1966

Pagination or Media Count : 10

Abstract : The electron microscope is used for studying nonmetallic inclusions in molybdenum and its alloys melted by various methods. The phase composition and distribution of the inclusions were determined in specimens of molybdenum produced by electron-beam melting and in molybdenum alloys containing carbon (0.003-0.0221%), titanium (0.02-03%) and zirconium (0.01-0.15%), produced by arc melting, and also by fusion melting. The specimens were studied in the cast, deformed and annealed states. The method used for producing the replicas is briefly described. Photomicrographs and diffraction patterns show that the inclusions consist basically of Mo2C molybdenum carbide. This is probably due to the melting conditions and heat treatment of the specimens. The electron-beam melting and annealing were done in a vacuum of 10-4-10-5 Hg mm. (Author)

Descriptors :   (*MOLYBDENUM, IMPURITIES), (*MOLYBDENUM ALLOYS, IMPURITIES), USSR, MICROSTRUCTURE, ELECTRON MICROSCOPY, ELECTRON DIFFRACTION, CARBIDES, TITANIUM ALLOYS, ZIRCONIUM ALLOYS, CARBON ALLOYS, MOLYBDENUM COMPOUNDS

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE