The nucleation and propagation of stress corrosion cracking(SCC)of four low-alloy steels with a wide range of tensile strength in H_2S were followed me- tallographically,using polished WOL type constant deflection specimen.

• 用抛光的 WOL 型恒位移试样跟踪观察了各种低合金钢在 H_2S 中应力腐蚀裂纹产生和扩展的规律。