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This volume constitutes the Proceedings of a Symposium on the Plastic Deformation of Ceramic Materials, held at The Pennsylvania State University, University Park, Pennsylvania, July 17, 18, and 19, 1974. The theme of this conference focused on single crystal and polycrystalline deformation processes in ceramic materials. The 31 contributed papers by 52 authors, present a current understand ing of the theory and application of deformation processes to the study and utilization of ceramic materials. The program chairmen gratefully acknowledge the financial assistance for the Symposium provided by the United States Atomic Energy Commission, The National Science Foundation, and The College of Earth and Mineral Sciences of The Pennsylvania State University. Special acknowledgment is extended to Drs. Louis C. Ianniello and Paul K. Predecki of the AEC and NSF, respectively. Of course, the proceedings would not have been possible without the excellent cooperation of the authors in preparing their manuscripts. Special appreciation is extended to the professional organi zation services provided by the J. Orvis Keller Conference Center of The Pennsylvania State University. In particular, Mrs. Patricia Ewing should be acknowledged for her excellent program organization and planning. Finally, we also wish to thank our secretaries for the patience and help in bringing these Proceedings to press.
List of contents
I. Fundamentals of the Plastic Deformation of Ceramics.- Deformation Mechanism Maps - A Review with Applications.- Slip and Twinning Systems in Ceramic Crystals.- Review of Diffusional Creep of Al2O3.- Grain Boundary Deformation Processes.- Thermally Activated Dislocation Motion in Ceramic Materials.- II. Single Crystal Deformation.- Rhombohedral Twinning in Aluminum Oxide.- Pyramidal Slip on $${ 11bar 23} $$ and Basal Twinning in Al2O3.- Strengthening Mechanisms in Sapphire.- Dynamics of Flow of C-axis Sapphire.- Drag Mechanisms Controlling Dynamic Dislocation Behavior in MgO Single Crystals.- Solution Strengthening of MgO Crystals.- Coherent Precipitate Strengthening in MgO.- Slip Systems in Stoichiometric Magnesium-Aluminate Spinel.- III. Deformation of Polycrystalline Ceramics.- Impurity and Grain Size Effects on the Creep of Polycrystalline Magnesia and Alumina.- Creep of Low-Density Yttria/Rare Earth-Stabilized Zirconia.- Relationship Between Primary and Steady-State Creep of UO2 at Elevated Temperature and Under Neutron Irradiation.- High Temperature Plasticity of Oxide Nuclear Fuels.- Deformation of Oxide Refractories.- Non-Elastic Deformation of Polycrystals With a Liquid Boundary Phase.- Analysis of the Time-Dependent Flexural Test.- Preliminary Creep Studies of Hot Pressed Silicon Nitride.- Deformation Twinning in Polycrystalline Perovskites.- Transformation Plasticity and Hot-Pressing.- Transformational Superplasticity in Pure Bi2O3 and the Bi2O3-Sm2O3 Eutectoid System.- Transformation Induced Deformation of Cordierite Glass-Ceramics.- The Varied Role of Plasticity in the Fracture of Inductile Ceramics.- IV. Deformation Processing.- Deformation Texture and Magnetic Properties of the Magnetoplumbite Ferrites.- Hot Working Alkali Halides for Laser WindowApplications.- Press Forging Behavior of KC1 Crystals and Resultant Strengthening.- Press Forging of Single Crystal Calcium Fluoride.- Grain Boundaries and Grain Boundary Mobility in Hot-Forged Alkali Halides.- Contributors.
