摘要
对10MoWVNb钢母材对接接头侧弯试验产生裂纹的断口进行了金相、扫描电镜及电子探针的分析，找出了侧湾开裂的主要原因，制定了合理的焊接规范参数和工艺，保证了焊接接头的性能要求．
By Using the metallographic microscope, scanning microscope and eletron micropoobe, the fracture surfaco of 10MoWVNb steel (Parent metal) butt weld which is sub jected to the side bend test is investigated. The rnain causes of side bend cracking is indicated. then the reasonable welding parameters and processing are chosen. in order to obtain the optimum mechanical properties of weldment.
