large-area welding 大面积焊接
welding coarse crystal area 焊接粗晶区
The holes in welding area mainly cause the fatigued wire to break.
焊接造成的内部气孔使环形锯丝在该处产生疲劳断裂。
SEM showed no pores and other defects and some ductility at laser welding area.
断口扫描电镜观察显示断口有一定的塑性,未发现气孔和焊接缺陷。
Hardness value of welding area is higher than that of 316l and aluminum. It indicates that there are the compounds on the interface.
焊缝区的硬度值较基体316 L板及铝板各自的硬度值高,表明界面有化合物存在。
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