Abstract Surface nanocrystallization provides the opportunity to produce gradient-structured metallic materials with improved properties. Several attempts have been made to produce nanostructured stainless steel (SS), along with the study of the resultant corrosion resistance. However, the current knowledge is insufficient to address the corrosion mechanism and the possible ways of enhancing the corrosion resistance after surface treatment. The present work reviews the past significant works on the effect of surface treatment by surface mechanical attrition treatment (SMAT) method as well as its processing parameters on the corrosion properties of SS. The corrosion resistance of nanostructured SS is influenced by the extent of grain refinement, compactness, and homogeneity of the passive film, Cr content, grain boundary structure, composition, and alloying elements. In addition, the resulting corrosion properties can be controlled by choosing the right processing parameters during treatment. Progress on the corrosion behavior of nanostructured steels was summarized and new avenues for further research and developments are proposed.

中文翻译：

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表面机械磨损处理（SMAT）纳米结构不锈钢的钝化和电化学性能综述：趋势与进展

摘要 表面纳米化为生产具有改进性能的梯度结构金属材料提供了机会。已经进行了几次尝试来生产纳米结构不锈钢 (SS)，同时研究了由此产生的耐腐蚀性。然而，目前的知识不足以解决腐蚀机理和表面处理后提高耐腐蚀性的可能途径。本工作回顾了过去关于表面机械磨损处理 (SMAT) 方法进行表面处理的重要工作及其工艺参数对 SS 腐蚀性能的影响。纳米结构 SS 的耐腐蚀性受钝化膜的晶粒细化程度、致密性和均匀性、Cr 含量、晶界结构、成分和合金元素。此外，可以通过在处理过程中选择正确的工艺参数来控制由此产生的腐蚀特性。总结了纳米结构钢腐蚀行为的研究进展，并提出了进一步研究和发展的新途径。