先进钢铁材料焊接性研究进展
彭云1(),宋亮1,2,赵琳1,马成勇1,赵海燕2,田志凌1
Research Status of Weldability of Advanced Steel
PENG Yun1(),SONG Liang1,2,ZHAO Lin1,MA Chengyong1,ZHAO Haiyan2,TIAN Zhiling1

图7. 氩弧焊焊缝的N的体积分数

Fig.7. Volume fraction of nitrogen of argon in arc welding seam