Methods: Electrochemical technique was adopted to detect the changes of anode polarization curves of TA2 and TC4 after welding with laser or pulsed tungsten argon arc.

方法：采用动电位极化技术，分别测定激光焊接及脉冲氩弧焊接TA2和TC4后，材料阳极极化曲线的变化。

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The anode polarization curves of testing steel were measured by electrochemical methods.

用电化学方法测得了带锈样的阳极极化曲线。

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