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本文研究了不同成分18-8型奥氏体焊缝金属的TTS曲线,得出超低碳级成分比用市售含铌焊条的抗晶间腐蚀能力优越。试验指出,在超低碳级成分的基础上适当提高含Cr量可显著捉高焊缝金属的腐蚀性能。
In this paper, the TTS curves of 18-8 austenitic weld metal with different compositions were studied. It is concluded that the ultra-low carbon content is superior to the intergranular corrosion resistance of commercially available niobium containing electrodes. It is pointed out that the appropriate increase of Cr content on the basis of ultra-low carbon content can significantly improve the corrosion performance of the weld metal.