RESEARCH ADVANCES OF STAINLESS-CLAD BIMETALLIC STEEL STRUCTURES

The stainless-clad (SC) bimetallic steel combines the excellent corrosion resistance of stainless steel with the high strength and low cost of conventional mild (CM) steel. It possesses better comprehensive mechanical properties and may lead to a shorter construction period, longer design service life, lower full-life cycle cost and higher social benefits, and therefore great potential is expected for the utilization in engineering structures with high requirements on corrosion resistance. At present, the SC bimetallic steel has been successfully used in high-rise building curtain walls and railway steel bridge decks. In order to further promote its application and development in the field of structural engineering, more research and discussions are urgently needed from the perspective of fundamental mechanical properties and engineering techniques. This article provides a comprehensive review of studies on manufacturing, engineering practice as well as mechanical properties of the SC bimetallic steel at material and component levels, including the tensile properties, bending properties, high temperature properties, fracture and fatigue properties, cyclic loading properties, high-strain rate properties, corrosion resistance, bonding interface performance, structural stability, residual stress, welded joint, defect repair as well as finite element modeling. It is expected to provide a reference for further research, design and application of the SC bimetallic steel in the field of structural engineering.