Surface effects in crystal plasticity
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Bibliographic Information
Surface effects in crystal plasticity
（NATO advanced study institutes series, ser. E . Applied sciences ; no. 17）
Noordhoff, 1977
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"Proceedings of the NATO Advanced Study Institute on Surface Effects in Crystal Plasticity, Hohegeiss, Germany, September 5-14, 1975."--T.p. verso
Includes bibliographical references
Description and Table of Contents
Description
John Keats, writing to Fanny Brawne [1], said "I long to believe in immortality ••••• I wish to believe in immortality - I wish to live with you forever". So much of this talk will be concerned with the ductile behaviour of crystals, plasticity in its narrower sense. We shall consider a crystal which is deforming by slip, and shall expose a surface in this crystal. We first think of the sur face as a simple mathematical cut along a low-index plane. Then we allow for the relaxation of the newly-exposed atoms, and for surface irregularities, and we consider the effect of lattice va cancies which can enter at the surface. We consider the effect of dissolving off the surface layers, either intermittently or contin uously. Then the effects of adsorption or oxidation by normal con stituents of the atmosphere must be considered, the effects of sur face alloying, and finally those of special surface-active agents. But "All/Life death does end and each day dies with sleep" [2], and plasticity in its broader sense includes the fracture ~'1hich term inates flow. Here there is a bewildering array of effects. The medium in which the crystal flows may enhance its ductility enor mously, or it may cause it to break almost without plastic deform ation, or under a load which it has already supported.
Table of Contents
Surface Effects in Crystal Plasticity: General Overview.- Surface Effects in Crystal Plasticity: Overview from the Crystal Plasticity Standpoint.- Surface Effects in Crystal Plasticity: Overview from a Surface Science Point of View.- Atomic Geometry and Electronic Structure of Solid Surfaces.- Space Charge Layers.- Surface Chemistry I: Multi-Component Systems.- Surface Chemistry II: Overlayers (New Phases).- Micropiasticity.- Inelastic Deformation and Fracture of Crystalline Solids.- Survey Lecture.- The Role of Surface-Environment Interactions on Cyclic Deformation.- A Surface Effect Specific to Cyclically Deformed BCC Metals — The Surface Roughening of Polycrystalline ?-Iron During Cyclic Deformation.- Dislocation Mobility in the Surface Layer.- Role of Free Surface in Yielding and Easy Glide Deformations of Highly Perfect Copper Crystals.- Microcinematographic Studies of the Development of Slip Bands.- The Plastic Flow Stress in the Core and Surface Regions of Deformed Crystals.- An Analysis of the Unloading Yield Point With Reference to the Pre-Macro-Yield Region.- New Studies of Surface Effects in Deformed Copper Single Crystals.- Influence of Surface Plasticity on the Deformation Behavior and Fracture Mode of Silicon.- On the Residual Stresses in Plastically Deformed Polycrystals and Composites.- Survey Lecture.- Surface Damage Resulting from Film Cracking.- Effect of Anodic Oxide Films on Low Temperature Mechanical Behavior of Niobium Single Crystals.- The Effect of Near-Surface Diffusion Layers on Fatigue of Copper.- Survey Lecture.- Surface Effects on the Yield Point of Sapphire.- Microdeformation of Hard Non-Metallic Crystals by Softer Indenters and Sliders.- The Chemomechanical Effect in Semiconductors.- Survey Lecture.- Chemical-Induced Variations in thePlasticity and Fracture of Metals and Minerals — Chemomechanical Effect.- Survey Lecture.- Mechanical Behavior of Oxide Free Stainless Steel Surfaces in A Low Pressure Hydrogen Environment.- A Unifying Model of Intergranular Corrosion, Intergranular Penetration of Liquid Metals, Stress Corrosion Cracking and Liquid Metal Embrlttlement of Substitutional Solid Solutions.- Cleavage vs. Shear At Crack Tips in Metal Crystals.- Nondestructive, Near-Surface Plasticity Determination by Electron Channeling.- Correlation Between Pitting and Stress Corrosion Cracking of Stainless Steels in Chloride Solutions.- What I Know and Would Like to Know Concerning Environmental Effects on the Mechanical Properties of Metals.- Survey Lecture: Applications of Chemomechanical Effects to Fracture-Dependent Industrial Processes.- Environmentally-Assisted Hard Materials Machining.- Erosion of Metals and Alloys.- Enhancement of Fatigue, Creep, and Stress Corrosion Resistance By Surface Treatments.- Microcutting: A Method to Study Surface Plasticity at Very High Strain Rates.- Surface Effects in Crystal Plasticity: Concluding Summary Lecture.- List of Participants.
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