The passive film mainly consists of oxides and hydroxide and is a key for corrosion protection of metallic materials. It increases the durability and performance of engineering components by spontaneous formation of effective, adherent barrier between the corrosive environment and a substrate. Herein, influence of plastic strain and after heat treatment on austenitic stainless steels was compared with the focus on stability of the passive film. The following materials were used in this study: Sanicro 28™, AISI 316 L, and AISI 304 L. These specimens were subjected to a true strain of 0.58. The conventional three-electrode cell was used to record the anodic potentiodynamic polarization curves. The grain size and other misorientation parameters were extracted using electron backscattered diffraction (EBSD). Fourier transform infrared spectroscopy (FTIR)-imaging was used for capturing chromium oxide (Cr2O3) peaks for all specimens. The average area of Cr2O3 peaks was compared with deformed and after heat treatment of 700 °C 30 min specimens. It was found that heat-treated specimens exhibited slightly higher average area of Cr2O3 than deformed.

中文翻译：

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应变对奥氏体不锈钢钝化稳定性的影响：与热处理的比较

钝化膜主要由氧化物和氢氧化物组成，是金属材料防腐的关键。它通过在腐蚀环境和基材之间自发形成有效的粘附屏障来提高工程部件的耐用性和性能。在此，将塑性应变和热处理后对奥氏体不锈钢的影响与对钝化膜稳定性的关注进行了比较。本研究中使用了以下材料：Sanicro 28™、AISI 316 L 和 AISI 304 L。这些样品经受了 0.58 的真实应变。使用传统的三电极电池记录阳极动电位极化曲线。使用电子背散射衍射 (EBSD) 提取晶粒尺寸和其他取向错误参数。傅里叶变换红外光谱 (FTIR) 成像用于捕获所有样品的氧化铬 (Cr2O3) 峰。将 Cr2O3 峰的平均面积与变形和 700°C 30 分钟热处理后的样品进行比较。发现热处理试样的 Cr2O3 平均面积略高于变形试样。