Ordered alloys — physical metallurgy and structural applications

A series of reviews of the physical and mechanical metallurgy of long-range-ordered alloys is introduced. Characteristics of single-phase ordered alloys are described, especially with regard to lattice defects and their influences on mechanical behaviour. Yielding, strain hardening, and fracture are shown to depend on long-range order. The influence of slip character, impurity segregation and both micro- and macroalloying techniques on fracture behaviour is outlined. New processing techniques applied to aluminides and other ordered alloys offer the potential for a new generation of light, oxidation-resistant, and ductile structural alloys. Recommendations are made for research to further the development of these alloys.