Ordered intermetallics constitute a unique class of metallic materials which may be developed as new-generation materials for structural use at high temperatures in hostile environments. At present, there is a worldwide interest in intermetallics, and extensive efforts have been devoted to intermetallic research and development in the U.S., Japan, European countries, and other nations. As a result, significant advances have been made in all areas of intermetallic research. This NATO Advanced Workshop on ordered intermetallics (1) reviews the recent progress, and (2) assesses the future direction of intermetallic research in the areas of electronic structure and phase stability, deformation and fracture, and high-temperature properties. The book is divided into six parts: (1) Electronic Structure and Phase Stability; (2) Deformation and Dislocation Structures; (3) Ductility and Fracture; (4) Kinetic Processes and Creep Behavior; (5) Research Programs and Highlights; and (6) Assessment of Current Research and Recommendation for Future Work. The first four parts review the recent advances in the three focus areas. The fifth part provides highlights of the intermetallic research under major programs and in different institutes and countries. The last part provides a forum for the discussion of research areas for future studies.

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Many advances in research and development have been made since the first MRS symposium on high-temperature ordered intermetallic alloys was held in 1984. That conference demonstrated a resurgence of interest in potential uses of intermetallic alloys for structural applications. Blossoming research in the field brings us to this book which has focused specifically on processing and microstructural control, alloy design, mechanical properties and industrial applications. Examples of structural applications of the 'mature' intermetallics, TiAl and Ni3Al are also featured. Evidence also suggests that high-melting-temperature refractory or platinum group metal-based intermetallics, still in the 'exotic' category, may yet represent the best potential for a breakthrough in high-temperature performance. Topics include: processing; titanium aluminides; creep and fatigue of titanium aluminides; iron aluminides; nickel aluminides; refractory metal-based and other intermetallics and composites.