The amount of the acicular ferrite and hardness of the weld metal increase as cu content increasing.

随着焊缝铜含量的增加，针状铁素体数量增加，焊缝显微硬度增大。

youdao

The amount of the acicular ferrite and hardness of the weld metal increase as cu content increasing.

随着焊缝铜含量的增加，针状铁素体数量增加，焊缝显微硬度增大。

youdao