研究了Ａ５３７低合金钢在３．５％ＮａＣｌ活化体系的低周腐蚀疲劳近表面的微观位错行为，特别是在不同的极化电位条件的位错结构．结果表明，在Ａ５３７／３．５％ＮａＣｌ活化体系中，当样品在相同应变幅条件加载直至断裂后，近表面的位错结构在－５８０ｍＶ阳极极化和－１２００ｍＶ强阴极极化条件，均为墙结构；而在－８００ｍＶ阴极保护条件下，为胞结构．
The effect of polarization on the dislocation behaviours of A537 low alloy steel in 3.5% NaCl active system during low cycle fatigue was studied. The results showed that in the system A537/3.5% NaCl, after the specimens were fractured at the same strain amplitude and various polarization potentials, the dislocation structures near the surface were wall structure at -580 mV(SCE) and -1200 mV(SCE), and cell structure at -800 mV(SCE) cathodic protective potential.Correspondent: WANG Jianqiu, Institute of Corrosion and Protection of Metals, Chinese Academy of Sciences,Shenyang 110015
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