Cristalli C., Pilloni L., Filacchioni G., Calza Bini A.
Italian National Agency for New Technologies, Energy and Sustainable Economic Development , Roma, Italy
The first generation of double-stabilized steels developed in 1980-ies showed influence of some elements on the structural stability of an austenitic matrix. The mechanical properties were affected by the precipitation behavior and by the onset of undesirable phases. Analysis of the results of the mechanical tests led to optimization of the chemical composition. A 2nd generation was realized based on 15Cr-15Ni and 15Cr-25Ni matrix. The tensile and creep program was achieved with test temperatures up to 850°C. The results are very promising.
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