先进钢铁材料焊接性研究进展
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彭云 1( ),宋亮 1,2,赵琳 1,马成勇 1,赵海燕 2,田志凌 1
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Research Status of Weldability of Advanced Steel
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PENG Yun 1( ),SONG Liang 1,2,ZHAO Lin 1,MA Chengyong 1,ZHAO Haiyan 2,TIAN Zhiling 1
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图2. 400 MPa超细晶粒钢激光焊焊缝中下贝氏体组织的TEM像
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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 |
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