Accession Number : AD0453156


Title :   A FUNDAMENTAL STUDY OF FACTORS GOVERNING YIELD IN METALS.


Descriptive Note : Final rept.,


Corporate Author : IIT RESEARCH INST CHICAGO ILL


Personal Author(s) : Evans ,P R V ; Brentnall ,W D ; Farrell ,K ; Koppenaal,T J


Report Date : Nov 1964


Pagination or Media Count : 86


Abstract : Contents: Part I The Dependence of the Lower Yield Stress on Grain Size in Niobium; Part II Dislocation Etch Pit Studies in Annealed and Deformed Polycrystalline Niobium; Part III Microstraining in Polycrystalline Niobium; Part IV Some Observations on Yielding in Polycrystalline Niobium-Oxygen and Niobium-Nitrogen Alloys; and Part V Some Observations on Mechanical Twinning in Polycrystalline Niobium.


Descriptors :   *NIOBIUM , *NIOBIUM ALLOYS , MECHANICAL PROPERTIES , MECHANICAL PROPERTIES , GRAIN STRUCTURES(METALLURGY) , CRYSTAL STRUCTURE , ETCHED CRYSTALS , CRYSTAL DEFECTS , DEFORMATION , PLASTIC PROPERTIES , IMPURITIES , METAL CRYSTALS , METALS , SINGLE CRYSTALS , STRESSES , STRAIN(MECHANICS) , MICROSTRUCTURE , GRAIN BOUNDARIES , OXYGEN , NITROGEN


Distribution Statement : APPROVED FOR PUBLIC RELEASE