采用周浸加速腐蚀试验，模拟工业大气腐蚀环境，通过组织分析、锈层微观成分及形貌分析、电化学分析等手段，研究了Ni，Cr，Cu元素对耐候熔敷金属耐蚀性能及力学性能的影响规律. 结果表明，Ni元素有利于增加组织中针状铁素体含量，提高熔敷金属−40 ℃冲击韧性，Cr元素增加，熔敷金属−40 ℃冲击韧性降低. 合金元素有利于提高腐蚀锈层中的α-FeOOH的含量，增加锈层致密度，提高锈层阻抗，降低自腐蚀电流密度. Cu元素有利于提高熔敷金属腐蚀初期和后期的耐蚀性能；腐蚀初期，Cr元素提高耐蚀性能的作用不如Cu和Ni，但是腐蚀后期Cr提高锈层耐蚀性能的作用明显.
The influence of Ni, Cr and Cu on mechanical and corrosion resistance properties of high-strength weathering steel deposited metal was investigated by using cycle immersion corrosion test, metallographic analysis, rust layer analysis and electrochemical test. The results show that Ni element can improve the –40 ℃ impact toughness of deposited metal by increasing the acicular ferrite content. On the contrary, Cr reduced the –40 ℃ impact toughness. Ni, Cr and Cu can increase the density and resistance of rust layer, and reduce self-etching current density of rust layer. Cu contributed to corrosion resistance of deposited metal in early and late corrosion time. The effect of Cr improving corrosion resistance was not better than that of Cr and Cu in the early corrosion time. However Cr can improve corrosion resistance of rust layer obviously in late corrosion time.
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