Through metallographic analyses , it was found that there was a big difference between the two welding seam texture shapes, the first welding seam basically was acerose or feathery austenite, and the second was crumby austenite.

• 通过金相分析,发现两道焊缝组织形态区别很大,第1道焊缝基本为针片状或羽毛状奥氏体,第2道焊缝却成团块状奥氏体。