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分别采用常规退火工艺、均匀化处理+球化退火的复合热处理工艺对新型钢结构材料进行了热处理。结果表明:与常规退火相比,复合热处理明显细化材料的组织,使碳化物以细小颗粒状弥散分布;显著改善材料的力学性能和耐腐蚀性能,室温抗拉强度、屈服强度和断后伸长率分别增加26.4%、29.5%、33.1%,在5%氯化钠溶液中腐蚀240 h后的质量损失率减小81.9%。
The new steel structure materials were heat-treated by the conventional annealing process, homogenization treatment and spheroidizing annealing combined heat treatment process respectively. The results show that, compared with the conventional annealing, the composite heat treatment significantly refine the microstructure of the material, so that the carbide dispersed in fine particles; significantly improve the mechanical properties and corrosion resistance of materials, tensile strength at room temperature, yield strength and elongation after fracture The rate of mass loss increased by 26.4%, 29.5% and 33.1%, respectively, and the mass loss rate decreased by 81.9% after 240 h of corrosion in 5% sodium chloride solution.