High-Performance Metals for Civil and Marine Structures

摘要

High-performance steel and aluminum can be used to reduce the weight of structures, facilitate more efficient fabrication, offer improved durability, and provide increased reserve capacity to resist accidental or extreme loading. Properties of high-performance metals, including ease of fabrication, strength, fracture toughness and ductility, are outlined. The effect of processing on the properties of high-performance metals is discussed. Experiments on full-scale welded high-performance steel structural members are discussed which demonstrate the extraordinary fracture resistance. Applications of high performance metals are also discussed. Design studies are outlined, which indicate that deflection, stability, and fatigue limit states often constrain the design of structures composed of high performance metals. Innovative structural systems and forms may be meeded to efficiently use high performance metals in civil and marine structural applications and avoid deflection, stability, and fatigue limit states.