Research on the Effect of Rust Layer Stabilization on Corrosion Resistance and Mechanical Properties of Weathering Steel Welded Joints
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摘要: 对锈层稳定化处理后的耐候钢焊接接头开展模拟工业大气环境的周期浸润腐蚀试验和单调拉伸试验,探究了锈层稳定化对耐候钢焊接接头腐蚀抗性和力学性能的影响规律。研究结果表明:锈层稳定化处理会提高内锈层的密实度,有效抑制长期腐蚀作用下试件的力学性能退化,具备较好的长期防腐效果;单调拉伸荷载作用下,焊接接头试件均在邻近焊缝5 ~20 mm区域的母材处发生断裂且塑性变形量较大。Abstract: Cyclic immersion corrosion tests simulating industrial atmospheric environments and monotonic tensile tests were conducted on weathering steel welded joints after rust layer stabilization treatment to investigate the influence of rust layer stabilization on the corrosion resistance and mechanical properties of the joints. The results indicated that the stabilization treatment enhanced the compactness of the inner rust layer, effectively suppressed long-term mechanical performance degradation, and provided excellent long-term anti-corrosion effects. Under monotonic tensile loading, all welded joint specimens fractured in the base metal region at a distance of 5-20 mm from the weld, exhibiting significant plastic deformation.
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