Accession Number : AD0768471

Title :   Investigation of Titanium Alloys at High Temperatures in a Vacuum,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Afonin,V. K. ; Pultsin,N. M. ; Gorbunov,S. A.

Report Date : 09 OCT 1973

Pagination or Media Count : 15

Abstract : Redistribution of alloying elements occurs in a vacuum of 10 to the minus seventh power mm Hg at temperatures of 800-1000C as result of the sublimation of the low-volatile compounds and elements on the surface of titanium alloys. This leads to a change in the physicochemical and mechanical properties of the titanium alloys. The qualitative agreement of thermodynamic and microspectral analysis results for redistribution of alloying elements was established. As a result of metallographic investigations of titanium alloys, the fact that sublimation is accompanied by formation of a step relief and emergence of dislocations on the sample surface was established.

Descriptors :   (*TITANIUM ALLOYS, *HIGH TEMPERATURE), (*OXIDATION, TITANIUM ALLOYS), VACUUM, ALUMINUM ALLOYS, CHROMIUM ALLOYS, MOLYBDENUM ALLOYS, TIN ALLOYS, MANGANESE ALLOYS, SUBLIMATION, TITANIUM COMPOUNDS, OXIDES, MICROSTRUCTURE, VANADIUM ALLOYS, FILMS, USSR

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE