Granular or lath be-bainite was formed in as-welded metal.

焊态下的焊缝组织是粒状或条状贝氏体。

The specimens of the welded joints were treated with ultrasonic impact treatment(UIT)and compared with the as-welded ones.

采用超声冲击处理（UIT）方法对焊接接头进行处理，并将冲击态接头与焊态接头进行了对比。