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
),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
),SONG Liang1,2,ZHAO Lin1,MA Chengyong1,ZHAO Haiyan2,TIAN Zhiling1
图2. 400 MPa超细晶粒钢激光焊焊缝中下贝氏体组织的TEM像
Fig.2. TEM images of lower bainite of laser welded joint of 400 MPa ultra-fine grain steel(heat input 2400 W, welding speed 1.0 m/min)(a) parallel ferrite lath (b) ferrite lath in different directions(c) bainitic lath and a small amount of retained austenite (d) carbide dispersed in ferrite
