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中文摘要：
首先利用表面机械研磨技术（SMAT）使低碳钢实现了表面纳米化，然后通过金相显微镜、X射线衍射仪对SMAT后低碳钢的微观组织结构进行表征，最后通过CS350型电化学工作站测试系统对试样进行测试，分析及比较了低碳钢及其SMAT试样在O.05mol／LH2S04＋0.05mol／LNa2S04介质中的腐蚀行为。实验表明，在SMAT之后，20号钢的耐腐蚀性能好于1O号钢，而这恰恰与粗晶状态下1O号钢的耐腐蚀性能好于20号钢的结果相反，其原因值得探究。
英文摘要：
The nanocrystalline microstructure in the surface of low carbon steel induced by surface mechanical at- trition treatment （SMAT） has been characterized by means of optical microscopy （OM） and X-ray diffractome- try （XRD）. Then, the effects of SMAT on corrosion resistance of low carbon steel measured in 0.05 mol/L H2 SO4 ＋0.05 mol/L Na2 SO4 solution have been investigated. The results showed that steel 20 SMAT sample has better corrosion resistance than steel 10 SMAT sample. It was thought-provoking that the results have been in contrast to the corrosion results in coarse grain state.
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