Research on Microstructure and Properties of New Stainless Steel for Desulfurization Pump Impeller

The microstructure, mechanical properties and corrosion resistance of a new type of stainless steel SRTZ1 material in solution state were studied. The results show that in the solution state, SRTZ1 is a typical duplex stainless steel composed of ferrite α and austenite γ, which has excellent mechanical properties; under the premise of good pitting corrosion resistance and uniform corrosion resistance, the erosion corrosion resistance and cavitation corrosion of the test steel are obviously better than that of the contrast material 1.4470; the test steel can replace the duplex stainless steel material 1.4470 as the impeller material of the desulfurization pump, to prolong the service life of the impeller.