Crystallography and crystal defects kelly pdf

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crystallography and crystal defects kelly pdf

Defect engineering using crystal symmetry

Defects in solids can be broadly classified based on their dimensionality 1. Zero-dimensional defects point defects arise as a consequence of entropy considerations configurational entropy and thus are thermodynamically required in any material. One-dimensional defects such as dislocations are not required by thermodynamics but arise anyway as a consequence of imperfections in the synthetic environment or due to structural constraints imposed by applied stresses from a variety of sources. Dislocations arise as a consequence of stresses imposed through thermal history, processing, or structural mismatch, as in the case of heteroepitaxial thin films, which are so prevalent in modern technology. Extended defects are known to have a profound influence in achieving or impacting the desired material performance. Complex networks of dislocations are designed into alloys to enhance their mechanical properties, such as the tensile strength in steels and other technologically relevant alloys 2.
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Crystal Structures and Symmetry (2015)

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Crystallography and Crystal Defects, 2nd Edition

You are currently using the site but have requested a page in the site. Would you like to change to the site? Anthony Kelly , Kevin M. Reinforcing its unrivalled position as the core text for teaching crystallography and crystal defects, each chapter includes problem sets with brief numerical solutions at the end of the book. Request permission to reuse content from this site. Undetected location. NO YES.

Since the first edition of this book, understanding of crystal defects such as dislocations, stacking faults, twin, grain and interphase boundaries and their effect on the mechanical and electrical properties of materials has grown enormously, and this has been accompanied by a total change in style of the way in which both research and teaching are carried out through the use of the fast digital computer. This new edition takes account of this change and a number of new topics are included, for example piezoelectricity, liquid crystals, nanocrystalline concepts, incommensurate materials and the structure of foamed and amorphous materials.
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