新日本制铁公司对于ＳＵＳ 4 44和奥氏体不锈钢不同材焊接区特性从晶界腐蚀方面进行了研究。实验从 3个方面进行 :( 1 )不同钢种焊接影响。把ＳＵＳ 4 44和ＳＵＳ 30 4、ＳＵＳ 31 6、ＳＵＳ 31 6Ｌ ,采用ＴＩＧ法焊接 ,使用 2个水准焊接线能量。 ( 2 )圆周焊接区性能波动。把 Nippon Steel Corporation for SUS 4 44 and austenitic stainless steel weld zone characteristics of different materials from the grain boundary corrosion studies. Experiments from three aspects: (1) the impact of different types of welding steel. SUS4 44 and SUS 30 4, SUS 31 6 and SUS 31 6L were welded by TIG method, and two standard welding line energies were used. (2) circumferential weld zone performance fluctuations. Put