通过拉伸试验、冲击试验、电化学腐蚀和面腐蚀质量损失法研究了Cr元素对1Cr_xMoNiVNbN耐热钢组织、力学性能和耐腐蚀性能的影响。结果表明:当Cr元素含量为11%时,钢的组织细小且分布均匀,钢的规定塑性延伸强度、抗拉强度为870.7、954.8 MPa,伸长率和冲击吸收能量分别为13.6%和28.6 J,维顿电流密度和腐蚀电位分别为1.1629×10~(-6A)/cm~2,-0.36702 V,面腐蚀失重法测得的面腐蚀速率为V失=8640 g/(m~2·h)。 The effects of Cr on the microstructure, mechanical properties and corrosion resistance of 1Cr_xMoNiVNbN heat-resistant steel were studied by tensile test, impact test, electrochemical corrosion and surface corrosion mass loss method. The results show that the microstructure of the steel is fine and uniform when the Cr content is 11%. The tensile strength of the steel is 870.7,954.8 MPa, and the elongation and impact energy are 13.6% and 28.6 J, respectively , WEDTON current density and corrosion potential were 1.1629 × 10 -6 A / cm 2 and -0.36702 V, respectively. The surface corrosion rate measured by surface corrosion loss was V = 8,840 g / (m 2 · h ).