Effect of Mn Content on Microstructure and Properties of 00Cr22Ni5Mo3Mnx Duplex Stainless Steel
The influence of Mn content on the microstructure,mechanical properties and corrosion resistance of 00Cr22Ni5Mo3Mnx duplex stainless steel were studied by metallographic microscope,universal tensile testing machine and impact test enginery testing methods.The results show the austenite content increases with the Mn content increasing;when Mn content is 1.5%,the two phase ratio is 1 ∶ 1;with the Mn content increasing,the mechanical properties first decreases and then increases;the corrosion resistant first increases and then decreases with the increase of Mn content;when Mn content is 1.2%-1.5%,the comprehensive performance of 00Cr22Ni5Mo3Mnx duplex stainless steel is best.