A Fundamental Study of Factors Governing Yield in Metals

摘要

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.