1999•Journal of Shaanxi Institute of TechnologyRequires access
Study on the pitting corrosion resistance of butt resistance welds of stainless steels
Li Hu
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Abstract
An investigation into the pitting corrosion resistance of butt resistance welds of stainless steels were carried out.It was found that the pitting corrosion resistance of as welded duplex stainless steels tested decreased from that of base materials in an acceptable extent about 10°C in CPT. For the welds of superduplex stainless steel the CPT is as high as that of its base metal,about 65～68°C.The width of its HAZ is rather narrow and the tendence of grain growing is small, showing a remarkable pitting corrosion resistance and weldability. The reason for the change in their pitting corrosion resistance was studied with composition and microstructure analysis.