Abstract：The lean duplex stainless steel is a structural material of high performance and low cost，with the broad application prospects，and it is most expected to be widely used in the fields of nuclear power，petrochemical industry，ship-building，paper-making and desalination of sea water. However，this kind of stainless steel can’t be manufactured yet based on industrial-scale due to their low hot ductility. A review was made on the development history，the evolution of microstructure and properties，the thermal deformation behaviors and the brittle phase precipitation of duplex stainless steel at home and abroad. From the theories of the organization evolution，the importance and feasibility of the improvement of the hot workability of duplex stainless steel was pointed out.
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2017, Vol. 27 
