Accession Number : AD0635596
Title : PETCH ANALYSIS OF HYDROGENATED TANTALUM SHEET.
Descriptive Note : Technical rept.
Corporate Author : ARMY MATERIALS RESEARCH AGENCY WATERTOWN MASS MATERIALS ENGINEERING DIV
Personal Author(s) : GAZZA, George E.
Report Date : MAY 1966
Pagination or Media Count : 13
Abstract : The anomalous behavior in ductility exhibited by tantalum, at low temperature, with hydrogen as an impurity was investigated utilizing a Petch-type analysis. The change in lattice friction stress and dislocation locking stress parameters were determined through a temperature range from room temperature to -196C. The results of the investigation show the locking stress remained essentially unchanged by small hydrogen additions while the lattice friction stress increased significantly at temperatures below -78C. (Author)
Descriptors : (*HYDROGEN EMBRITTLEMENT, TANTALUM), (*TANTALUM, LOW TEMPERATURE), (*HYDROGENATION, TANTALUM), SHEETS, DUCTILITY, HYDROGEN, IMPURITIES, STRESSES, CRYOGENICS, TENSILE PROPERTIES, GRAIN STRUCTURES(METALLURGY)
Subject Categories : Metallurgy and Metallography
Distribution Statement : APPROVED FOR PUBLIC RELEASE