Abstract The precipitation of a fine Cu-rich phase dispersedly distributed in the austenitic matrix can impart the novel properties of Super 304H SS. However, the contributions have not been well understood due to the difficulty encountered in obtaining precise experimental information on the corrosion events introduced by the nano-sized Cu-rich precipitates. In this work, we have applied TEM and clarified the dissolution occurred in Cu-rich phase and the dissolution-induced evolution in structure and chemistry on the surface. This work enabled us glean atomic scale insights on the effect of the Cu-rich phase on the corrosion behavior of the Super 304H SS.

中文翻译：

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TEM研究富Cu相对Super 304H奥氏体不锈钢腐蚀行为的影响

摘要 分散分布在奥氏体基体中的细小富铜相的析出可以赋予 Super 304H SS 新的性能。然而，由于难以获得有关纳米级富铜沉淀物引入的腐蚀事件的精确实验信息，因此这些贡献尚未得到很好的理解。在这项工作中，我们应用了 TEM 并阐明了富铜相中发生的溶解以及溶解诱导的表面结构和化学演变。这项工作使我们能够从原子尺度上了解富铜相对 Super 304H SS 腐蚀行为的影响。