Accession Number : AD0698515

Title :   ABRUPT DECREASE IN TITANIUM PLASTICITY AT HIGH TEMPERATURES,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Kolachev,B. A. ; Livanov,V. A. ; Bukhanova,A. A. ; Guselnikov,N. Ya.

Report Date : 06 AUG 1969

Pagination or Media Count : 11

Abstract : An investigation showed that an abrupt drop in plasticity is observed in vacuum-treated titanium in the 300-500C interval. In titanium saturated with hydrogen, hydrogen brittleness is superimposed on this drop at low rates of stretching. The hydrogen brittleness is caused by directional diffusion of hydrogen toward imperfections of the crystal structure and toward grain boundaries. The effect of hydrogen on titanium properties in this interval of temperatures is similar to strain aging. (Author)

Descriptors :   (*TITANIUM ALLOYS, PLASTIC PROPERTIES), HIGH TEMPERATURE, HYDROGEN EMBRITTLEMENT, DISLOCATIONS, GRAIN BOUNDARIES, USSR

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE