オーステナイトステンレス鋼溶接金属の耐孔食性におよぼす Mo と N の影響

概要

論文の詳細を見る
The effect of Mo and N on chloride pitting corrosion has been studied in the welds of commercial type and high N-containing (0.34% N) austenitic stainless steel. The results are as follows : 1) Austenitic stainless steel weld metal is more susceptible to chloride pitting corrosion than base metal. This loss of pitting corrosion resistance is due to the dendritic micro-segregation of alloy elements such as Mo and Cr which are preferable effect on pitting corrosion. 2) The pitting corrosion resistance in weld metals increases with nitrogen content in both commercial type and high N-containing steel, independent of whether molybdenum coexists or not. 3) Increase of Mn which segregates in γ phase on solidification process improves pitting corrosion resistance by enhancing the solubility of nitrogen in γ phase of the weld metal.
社団法人溶接学会の論文
1980-08-05