In this work, surface mechanical rolling treatment (SMRT) was adopted to obtain the gradient nanostructured (GNS) layer on AISI 316L stainless steel (SS) surface. To evaluate the effect of the GNS, anti-corrosion and corrosive wear tests of the SMRT sample were conducted in pure water and corrosive medium in comparison with a unSMRT (i.e., coarse-grained 316L SS). The corrosion behaviors, tribological properties, damage mechanism as well as relation of pitting and delamination, have been investigated to clarify their synergetic effects and failure mechanism. The results show that, the GNS of 316L SS has poor corrosion resistance due to initiation in local of stress corrosion crack (SCC). However, in comparison with the unSMRT sample, the pitting resistance of 316L SS after SMRT is significantly enhanced. For both samples, the wear loss by delamination is obviously accelerated by corrosion in the friction process. The tribo-corrosion resistance is markedly enhanced with the GNS l...

中文翻译：

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表面机械滚轧处理的具有表面纳米晶化的AISI 316L不锈钢的耐腐蚀和腐蚀磨损性能

在这项工作中，采用表面机械轧制处理（SMRT）在AISI 316L不锈钢（SS）表面上获得梯度纳米结构（GNS）层。为了评估GNS的效果，与unSMRT（即粗粒316L SS）相比，在纯水和腐蚀性介质中对SMRT样品进行了耐腐蚀和腐蚀磨损测试。研究了其腐蚀行为，摩擦学性能，损伤机理以及点蚀和分层的关系，以阐明它们的协同作用和破坏机理。结果表明，由于应力腐蚀裂纹（SCC）局部起爆，316L SS的GNS的耐腐蚀性较差。但是，与unSMRT样品相比，SMRT后316L SS的耐点蚀性显着增强。对于两个样本，在摩擦过程中，腐蚀明显加速了分层的磨损损失。GNS润滑脂显着增强了耐摩擦腐蚀性能。