采用磁场辅助热处理和常规热处理两种方法,分别对典型的化工机械材料09Mn Ni DR钢进行了正火处理,并进行了显微组织、力学性能、耐腐蚀性能的测试与分析。结果表明,与常规热处理相比,磁场辅助热处理使平均晶粒尺寸减小46%,碳化物由聚集态变为弥散态分布,屈服强度增加16%,抗拉强度增加12%,伸长率增加11%,断面收缩率增加12%,冲击功增加18%,腐蚀电位正移348 m V。这些有效提高了材料的力学性能和耐腐蚀性能。 The magnetic field-assisted heat treatment and conventional heat treatment were used to normalize 09Mn Ni DR steel, respectively. The microstructure, mechanical properties and corrosion resistance were tested and analyzed. The results show that the magnetic field-assisted heat treatment reduces the average grain size by 46% compared with the conventional heat treatment. The carbides change from aggregated state to dispersed state, the yield strength increases by 16%, the tensile strength increases by 12% and the elongation increases 11%, the reduction of area is increased by 12%, the impact energy is increased by 18% and the corrosion potential is shifted by 348 m. These effectively improve the mechanical properties and corrosion resistance of the material.